Fix duplicate video in docs

[edenlightning]

What does this PR do?

Fixes # (issue)

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[rohitgr7]

Hi @edenlightning I actually removed it here: #4629 and made some changes to the docs as required by the PR.

[codecov]

Codecov Report

Merging #4952 (f0cd727) into master (eeae426) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #4952   +/-   ##
======================================
  Coverage      92%     92%           
======================================
  Files         124     124           
  Lines        9186    9186           
======================================
  Hits         8487    8487           
  Misses        699     699