docs: change the slack channel instructions

[nzur-newrelic]

Description

Change in the documentation due to a new feature that changed the behavior Please include a summary of the change and which issue is fixed (if relevant).

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• [x] New feature (non-breaking change which adds functionality)
• [x] This change requires a documentation update

Checklist:

Please delete options that are not relevant.

• [x] My commit message follows conventional commits
• [x] I have performed a self-review of my own code
• [x] I have made corresponding changes to the documentation
• [x] New and existing unit tests pass locally with my changes. Go here for instructions on running tests locally.

How to test this change?

Please describe how to test your changes. Include any relevant steps in the UI, HCL file(s), commands, etc

[codecov-commenter]

Codecov Report

Merging #2478 (913e634) into main (f9aa096) will not change coverage. Report is 2 commits behind head on main. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2478   +/-   ##
=======================================
  Coverage   33.87%   33.87%           
=======================================
  Files          91       91           
  Lines       24884    24884           
=======================================
  Hits         8429     8429           
  Misses      16300    16300           
  Partials      155      155           

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