README file reformat and vulnerability mitigation

[Bitts64]

Purpose

Adjusting README to better fit Markdown conventions, and addressing security vulnerabilities highlighted in an npm audit.

• ...

Does this introduce a breaking change?

[ ] Yes
[ x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[x ] Other... Please describe:
README whitespace fixes (trimmed trailing whitespace, added final new line), updated vulnerable packages

## How to Test
*  Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

* Test the code
Configure environment variables in .env
Execute npm run dev
Test in web browser

What to Check

Verify that the application starts, and that all functions execute without errors.

Other Information

No updates introducing breaking changes were applied.

[Bitts64]

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