Add table of content to the Contributing.md

[Timonwa]

Add Table of Content

Add a Table of Content for the Contributing file which also serves as a link to the corresponding sections in the file such that when the user clicks on one of the links, it will take them directly to that section in the Contributing file.

Task

• create a Table of Content for the Contributions.md.
• each item in the Table of Content should link to each section when the user clicks on it.
• the table of content should be placed immediately before the No Code Contributions section.

Resources.

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[anthonychinwe]

I would like to work on this @Timonwa