docs: Updated documentation in update potting region.

[anskhanson]

Description

Updated example for update potting region.

Issue linked

Update potting region example is incorrect #476

Checklist:

• [n/a] Run unit tests and make sure they all pass
  - Run tests without Sherlock running
  - Run tests with Sherlock GRPC connection
• [n/a] Check and fix style errors
  - pre-commit command line check
  - Problems tab in PyCharm
• [n/a] Bench test new/modified APIs by using and modifying the code in the example for the API method
• [n/a] Add new classes to rst files, located at: \doc\source\api
• Generate documentation
• Verify the HTML. It gets generated at: \doc\build\html.
  - Open index.html
  - Click on "API Reference" at the top.
  - Verify HTML for API changes.
• [n/a] Check that test code coverage is at least 80% when Sherlock is running
• Make sure that the title of the pull request follows Commit naming conventions (e.g. feat: adding new PySherlock command)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.07%. Comparing base (3a358f9) to head (828acc7).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #477   +/-   ##
=======================================
  Coverage   60.07%   60.07%           
=======================================
  Files          21       21           
  Lines        5009     5009           
=======================================
  Hits         3009     3009           
  Misses       2000     2000           

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[ansjmoody]

After this is completed, this commit should be cherry picked to the release/0.8 branch.