Tidy up validate-modules ignores for notification modules (#1229) (#1232)

* fixed validation-modules for plugins/modules/notification/bearychat.py

* fixed validation-modules for plugins/modules/notification/campfire.py

* fixed validation-modules for plugins/modules/notification/catapult.py

* fixed validation-modules for plugins/modules/notification/flowdock.py

* fixed validation-modules for plugins/modules/notification/grove.py

* fixed validation-modules for plugins/modules/notification/hipchat.py

* fixed validation-modules for plugins/modules/notification/irc.py

* fixed validation-modules for plugins/modules/notification/jabber.py

* fixed validation-modules for plugins/modules/notification/logentries_msg.py

* fixed validation-modules for plugins/modules/notification/mail.py

* fixed validation-modules for plugins/modules/notification/matrix.py

* fixed validation-modules for plugins/modules/notification/mattermost.py

* fixed validation-modules for plugins/modules/notification/mqtt.py

* fixed validation-modules for plugins/modules/notification/nexmo.py

* fixed validation-modules for plugins/modules/notification/office_365_connector_card.py

* fixed some docs issues in plugins/modules/notification/pushbullet.py, but cannot remove the ignore lines yet

* fixed validation-modules for plugins/modules/notification/pushover.py

* fixed some docs issues in plugins/modules/notification/rocketchat.py, but cannot remove all ignore lines yet

* fixed validation-modules for plugins/modules/notification/say.py

* fixed validation-modules for plugins/modules/notification/sendgrid.py

* fixed validation-modules for plugins/modules/notification/slack.py

* fixed validation-modules for plugins/modules/notification/syslogger.py

* fixed validation-modules for plugins/modules/notification/telegram.py

* fixed validation-modules for plugins/modules/notification/twilio.py

* fixed validation-modules for plugins/modules/notification/typetalk.py

* Enabling validation-modules for modules in: notification

* removed naughty trailing space

(cherry picked from commit 24f780ec9a)

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

plugins/modules/notification/matrix.py

@@ -16,28 +16,35 @@ description:
     - This module sends html formatted notifications to matrix rooms.
 options:
     msg_plain:
+        type: str
         description:
             - Plain text form of the message to send to matrix, usually markdown
         required: true
     msg_html:
+        type: str
         description:
             - HTML form of the message to send to matrix
         required: true
     room_id:
+        type: str
         description:
             - ID of the room to send the notification to
         required: true
     hs_url:
+        type: str
         description:
             - URL of the homeserver, where the CS-API is reachable
         required: true
     token:
+        type: str
         description:
             - Authentication token for the API call. If provided, user_id and password are not required
     user_id:
+        type: str
         description:
             - The user id of the user
     password:
+        type: str
         description:
             - The password to log in with
 requirements: