Clean up module documentation (#36909)

* Clean up module documentation

This PR includes:
- Removal of `default: None` (and variations)
- Removal of `required: false`
- Fixing booleans and `type: bool` where required

* Fix remaining (new) validation issues

lib/ansible/modules/monitoring/monit.py

@@ -25,22 +25,18 @@ options:
     description:
       - The name of the I(monit) program/process to manage
     required: true
-    default: null
   state:
     description:
       - The state of service
     required: true
-    default: null
     choices: [ "present", "started", "stopped", "restarted", "monitored", "unmonitored", "reloaded" ]
   timeout:
     description:
       - If there are pending actions for the service monitored by monit, then Ansible will check
         for up to this many seconds to verify the requested action has been performed.
         Ansible will sleep for five seconds between each check.
-    required: false
     default: 300
     version_added: "2.1"
-requirements: [ ]
 author: "Darryl Stoflet (@dstoflet)"
 '''