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/notification/irc.py

@@ -24,34 +24,27 @@ options:
   server:
     description:
       - IRC server name/address
-    required: false
     default: localhost
   port:
     description:
       - IRC server port number
-    required: false
     default: 6667
   nick:
     description:
       - Nickname to send the message from. May be shortened, depending on server's NICKLEN setting.
-    required: false
     default: ansible
   msg:
     description:
       - The message body.
     required: true
-    default: null
   topic:
     description:
       - Set the channel topic
-    required: false
-    default: null
     version_added: "2.0"
   color:
     description:
       - Text color for the message. ("none" is a valid option in 1.6 or later, in 1.6 and prior, the default color is black, not "none").
         Added 11 more colors in version 2.0.
-    required: false
     default: "none"
     choices: [ "none", "white", "black", "blue", "green", "red", "brown", "purple", "orange", "yellow", "light_green", "teal", "light_cyan",
                "light_blue", "pink", "gray", "light_gray"]
@@ -62,18 +55,14 @@ options:
   nick_to:
     description:
       - A list of nicknames to send the message to. One of nick_to or channel needs to be set.  When both are defined, the message will be sent to both of them.
-    required: false
-    default: null
     version_added: "2.0"
   key:
     description:
       - Channel key
-    required: false
     version_added: "1.7"
   passwd:
     description:
       - Server password
-    required: false
   timeout:
     description:
       - Timeout to use while waiting for successful registration and join
@@ -83,19 +72,19 @@ options:
   use_ssl:
     description:
       - Designates whether TLS/SSL should be used when connecting to the IRC server
-    default: False
+    type: bool
+    default: 'no'
     version_added: "1.8"
   part:
     description:
       - Designates whether user should part from channel after sending message or not.
         Useful for when using a faux bot and not wanting join/parts between messages.
-    default: True
+    type: bool
+    default: 'yes'
     version_added: "2.0"
   style:
     description:
       - Text style for the message. Note italic does not work on some clients
-    default: None
-    required: False
     choices: [ "bold", "underline", "reverse", "italic" ]
     version_added: "2.0"