Update overview link 2240

[Pauljsyi]

Fixes #2240

What changes did you make and why did you make them ?

-Instead of the Overview link redirecting to a google docs page it opens the same file in pdf format stored locally.
-Updated markdown file regarding Expunge Assist overview url to point to a pdf file stored locally.
-Setting a standard on how pdf files should be opened.

Screenshots of Proposed Changes Of The Website (if any, please do not screen shot code changes)

Visuals before changes are applied

Visuals after changes are applied

[github-actions]

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git checkout -b Pauljsyi-update-overview-link-2240 gh-pages
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[BrianCodes33]

I reviewed the files and everything looks good. Nicely done!

[JessicaLucindaCheng]

@Pauljsyi Good job on this issue! Could you please do the following?

1. Please add your pull request to the project board.

2. In the changes you made section, you wrote, "Updated markdown, html and js files regarding Expunge Assist overview url to point to a local directory containing the pdf file." However, in the Files changed tab, I only see the pdf being added and line 37 of the markdown file with changes. Could you edit and clarify in your post on what you meant in terms of updating html and js files?

[JessicaLucindaCheng]

@Pauljsyi Looks good to me! Thanks for making those changes!