Create an informative issue (See each section, incomplete templates/issues won't be triaged)

2.12 documentation will need a new item in the deprecation table here: 

https://github.com/stolostron/rhacm-docs/blob/2.12_stage/release_notes/deprecate_remove.adoc#product-title-short-deprecations 

In 2.12 we will deprecate the classic overview page layout. This will include a "Deprecated" label in the header and an Alert component to guide the user in using the new Fleet view layout. See below image.

Describe the changes in the doc and link to your dev story

Provide info for the following steps:

1. - [x] Mandatory Add the required version to the Fix version/s field.

ACM 2.12

2. - [ ] Mandatory Choose the type of documentation change.

      - [x] New topic in an existing section or new section
      - [ ] Update to an existing topic

3. - [ ] Mandatory for GA content:
            
       - [ ] Add steps and/or other important conceptual information here: 
       In 2.12 when a user navigates to the classic overview page they will now see deprecation labels. We want the users to use fleet view page. in 2.13 the classic overview page will be removed from the product.
            
       - [ ] Add Required access level for the user to complete the task here:
       All users

       - [ ] Add verification at the end of the task, how does the user verify success.
     User can verify by navigating to the Overview page and seeing the deprecation labels present on the classic overview page.
     
       - [ ] Add link to dev story here:

https://issues.redhat.com/browse/ACM-13043