Updates screenshots of the comment text editor

This commit updates and renames the screenshots

doc/development/contributing/first_contribution.md

@@ -343,7 +343,7 @@ Now you're ready to push changes from the community fork to the main GitLab repo
 1. If you're happy with this merge request and want to start the review process, type
    `@gitlab-bot ready` in a comment and then select **Comment**.
 
-   ![GitLab bot ready comment](img/bot_ready.png)
+   ![GitLab bot ready comment](img/bot_ready_v16_6.png)
 
 Someone from GitLab will look at your request and let you know what the next steps are.
 

doc/user/project/issues/associate_zoom_meeting.md

@@ -30,7 +30,7 @@ a system alert notifies you of its successful addition.
 The issue's description is automatically edited to include the Zoom link, and a button
 appears right under the issue's title.
 
-![Link Zoom Call in Issue](img/zoom-quickaction-button.png)
+![Link Zoom Call in Issue](img/zoom_quickaction_button_v16_6.png)
 
 You are only allowed to attach a single Zoom meeting to an issue. If you attempt
 to add a second Zoom meeting using the `/zoom` quick action, it doesn't work. You