updating the tdm-calculater.md and pdf

[blulady]

Fixes #replace_this_text_with_the_issue_number

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

-Downloaded a copy of LA TDM Calculator's overview pdf and put it in [/assets/pdfs]
-Changed the 'Overview' link for the [markdown file]
-Ensured that the links in both the project page and the project's [dedicated page]

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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From your project repository, check out a new branch and test the changes.

git checkout -b blulady-update-overview-link-TDM-Calc-2211 gh-pages
git pull https://github.com/blulady/website.git update-overview-link-TDM-Calc-2211

[SAUMILDHANKAR]

@blulady I understand the changes that you want to make are related to issue #2242, however, since your PR #2772 is supposed to fix the issue, so the changes should be made there. Please close this PR and continue working on PR #2772. Thank you.