[PR #5760/9e3a729d backport][stable-5] Improve callback docs (#5783)

Improve callback docs (#5760)

* Improve callback docs.

* Apply suggestions from code review

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

* Update plugins/callback/logentries.py

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

* More improvements.

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

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
(cherry picked from commit 9e3a729da9)

Co-authored-by: Felix Fontein <felix@fontein.de>

plugins/callback/sumologic.py

@@ -12,14 +12,14 @@ type: notification
 short_description: Sends task result events to Sumologic
 author: "Ryan Currah (@ryancurrah)"
 description:
-  - This callback plugin will send task results as JSON formatted events to a Sumologic HTTP collector source
+  - This callback plugin will send task results as JSON formatted events to a Sumologic HTTP collector source.
 requirements:
   - Whitelisting this callback plugin
   - 'Create a HTTP collector source in Sumologic and specify a custom timestamp format of C(yyyy-MM-dd HH:mm:ss ZZZZ) and a custom timestamp locator
     of C("timestamp": "(.*)")'
 options:
   url:
-    description: URL to the Sumologic HTTP collector source
+    description: URL to the Sumologic HTTP collector source.
     env:
       - name: SUMOLOGIC_URL
     ini:
@@ -28,7 +28,7 @@ options:
 '''
 
 EXAMPLES = '''
-examples: >
+examples: |
   To enable, add this to your ansible.cfg file in the defaults block
     [defaults]
     callback_whitelist = community.general.sumologic