consul: minor fixes in docs (#5767)

* consul: minor fixes in docs

* additional docs fixes

* adjustments from review

plugins/modules/consul.py

@@ -23,7 +23,7 @@ description:
    by Consul from the Service name and id respectively by appending 'service:'
    Node level checks require a I(check_name) and optionally a I(check_id)."
  - Currently, there is no complete way to retrieve the script, interval or ttl
-   metadata for a registered check. Without this metadata it is  not possible to
+   metadata for a registered check. Without this metadata it is not possible to
    tell if the data supplied with ansible represents a change to a check. As a
    result this does not attempt to determine changes and will always report a
    changed occurred. An API method is planned to supply this metadata so at that
@@ -37,7 +37,7 @@ options:
     state:
         type: str
         description:
-          - register or deregister the consul service, defaults to present
+          - Register or deregister the consul service, defaults to present.
         default: present
         choices: ['present', 'absent']
     service_name:
@@ -45,30 +45,30 @@ options:
         description:
           - Unique name for the service on a node, must be unique per node,
             required if registering a service. May be omitted if registering
-            a node level check
+            a node level check.
     service_id:
         type: str
         description:
-          - the ID for the service, must be unique per node. If I(state=absent),
+          - The ID for the service, must be unique per node. If I(state=absent),
             defaults to the service name if supplied.
     host:
         type: str
         description:
-          - host of the consul agent defaults to localhost
+          - Host of the consul agent defaults to localhost.
         default: localhost
     port:
         type: int
         description:
-          - the port on which the consul agent is running
+          - The port on which the consul agent is running.
         default: 8500
     scheme:
         type: str
         description:
-          - the protocol scheme on which the consul agent is running
+          - The protocol scheme on which the consul agent is running.
         default: http
     validate_certs:
         description:
-          - whether to verify the TLS certificate of the consul agent
+          - Whether to verify the TLS certificate of the consul agent.
         type: bool
         default: true
     notes:
@@ -78,12 +78,12 @@ options:
     service_port:
         type: int
         description:
-          - the port on which the service is listening. Can optionally be supplied for
-            registration of a service, i.e. if I(service_name) or I(service_id) is set
+          - The port on which the service is listening. Can optionally be supplied for
+            registration of a service, i.e. if I(service_name) or I(service_id) is set.
     service_address:
         type: str
         description:
-          - the address to advertise that the service will be listening on.
+          - The address to advertise that the service will be listening on.
             This value will be passed as the I(address) parameter to Consul's
             C(/v1/agent/service/register) API method, so refer to the Consul API
             documentation for further details.
@@ -91,63 +91,64 @@ options:
         type: list
         elements: str
         description:
-          - tags that will be attached to the service registration.
+          - Tags that will be attached to the service registration.
     script:
         type: str
         description:
-          - the script/command that will be run periodically to check the health
-            of the service. Scripts require I(interval) and vice versa.
+          - The script/command that will be run periodically to check the health of the service.
+          - Requires I(interval) to be provided.
     interval:
         type: str
         description:
-          - the interval at which the service check will be run. This is a number
-            with a s or m suffix to signify the units of seconds or minutes e.g
-            C(15s) or C(1m). If no suffix is supplied, m will be used by default e.g.
-            C(1) will be C(1m). Required if the I(script) parameter is specified.
+          - The interval at which the service check will be run.
+            This is a number with a C(s) or C(m) suffix to signify the units of seconds or minutes e.g C(15s) or C(1m).
+            If no suffix is supplied C(s) will be used by default, e.g. C(10) will be C(10s).
+          - Required if one of the parameters I(script), I(http), or I(tcp) is specified.
     check_id:
         type: str
         description:
-          - an ID for the service check. If I(state=absent), defaults to
+          - An ID for the service check. If I(state=absent), defaults to
             I(check_name). Ignored if part of a service definition.
     check_name:
         type: str
         description:
-          - a name for the service check. Required if standalone, ignored if
+          - Name for the service check. Required if standalone, ignored if
             part of service definition.
     ttl:
         type: str
         description:
-          - checks can be registered with a ttl instead of a I(script) and I(interval)
+          - Checks can be registered with a ttl instead of a I(script) and I(interval)
             this means that the service will check in with the agent before the
             ttl expires. If it doesn't the check will be considered failed.
             Required if registering a check and the script an interval are missing
-            Similar to the interval this is a number with a s or m suffix to
-            signify the units of seconds or minutes e.g C(15s) or C(1m). If no suffix
-            is supplied, C(m) will be used by default e.g. C(1) will be C(1m)
+            Similar to the interval this is a number with a C(s) or C(m) suffix to
+            signify the units of seconds or minutes e.g C(15s) or C(1m).
+            If no suffix is supplied C(s) will be used by default, e.g. C(10) will be C(10s).
     tcp:
         type: str
         description:
           - Checks can be registered with a TCP port. This means that consul
             will check if the connection attempt to that port is successful (that is, the port is currently accepting connections).
             The format is C(host:port), for example C(localhost:80).
-            I(interval) must also be provided with this option.
+          - Requires I(interval) to be provided.
         version_added: '1.3.0'
     http:
         type: str
         description:
-          - checks can be registered with an HTTP endpoint. This means that consul
+          - Checks can be registered with an HTTP endpoint. This means that consul
             will check that the http endpoint returns a successful HTTP status.
-            I(interval) must also be provided with this option.
+          - Requires I(interval) to be provided.
     timeout:
         type: str
         description:
           - A custom HTTP check timeout. The consul default is 10 seconds.
             Similar to the interval this is a number with a C(s) or C(m) suffix to
             signify the units of seconds or minutes, e.g. C(15s) or C(1m).
+            If no suffix is supplied C(s) will be used by default, e.g. C(10) will be C(10s).
     token:
         type: str
         description:
-          - the token key identifying an ACL rule set. May be required to register services.
+          - The token key identifying an ACL rule set. May be required to register services.
 '''
 
 EXAMPLES = '''