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/cloud/webfaction/webfaction_app.py

@@ -44,7 +44,6 @@ options:
     state:
         description:
             - Whether the application should exist
-        required: false
         choices: ['present', 'absent']
         default: "present"
 
@@ -57,19 +56,18 @@ options:
         description:
             - Whether the app should restart with an C(autostart.cgi) script
         type: bool
-        default: "no"
+        default: 'no'
 
     extra_info:
         description:
             - Any extra parameters required by the app
-        required: false
         default: ''
 
     port_open:
         description:
             - IF the port should be opened
         type: bool
-        default: false
+        default: 'no'
 
     login_name:
         description:
@@ -84,7 +82,7 @@ options:
     machine:
         description:
             - The machine name to use (optional for accounts with only one machine)
-        default: false
+        default: False
 
 '''