FIX: SUMMARY.md section file name - Django with Mysql

[jrinder42]

Description

Modify the Connect Django With Mysql Database filename in docs --> user-guide --> use-cases to follow the other file names in that section as well as the SUMMARY.md file in the docs folder.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Updated all locations where this file shows up i.e. in the use-cases folder and the SUMMARY.md file in the documentation.

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have tested it for all user roles

[arushi09-hub]

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