Improve code/fix and remove eslint errors

[ChrisBit]

This PR:

• Use JSX.Element instead of ReactElement, so that we can avoid importing a otherwise unused import. Using JSX.Element should be good for most cases. But the best solution would probably be to switch to using TypeScript in .ts files.
• Removes unneeded eslint-disable's

This PR aims to "Improve code in any way" issue #16

Self-Review Checklist

• PR title is clear with proper spelling and grammar
• PR description contains a bulleted list of changes contained in the PR
• PR links to relevant issues, with keywords to auto-close any issues fully resolved upon merge
• All automated checks passed - Lighthouse fails, but this is a unrelated, known issue [🪲] Errors in Lighthouse Automated Test [🪲] Errors in Lighthouse Automated Test #281.
• Any variables introduced are named clearly and explicitly

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/margaritahumanitarian/helpafamily/3a1bSBn7KD9HgKFAGeEpw8Xgn49y
✅ Preview: https://helpafamily-git-fork-chrisbit-impr-595f1b-margaritahumanitarian.vercel.app

[codecov-commenter]

Codecov Report

Merging #296 (57981ca) into main (f438bf2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #296   +/-   ##
=======================================
  Coverage   13.67%   13.67%           
=======================================
  Files          36       36           
  Lines         256      256           
  Branches       17       17           
=======================================
  Hits           35       35           
  Misses        206      206           
  Partials       15       15           

Impacted Files	Coverage Δ
components/LandingPageNav.js	0.00% <ø> (ø)
components/LargeHeroContent.js	0.00% <ø> (ø)
components/LargeHeroSection.js	0.00% <ø> (ø)
pages/_app.js	0.00% <ø> (ø)
pages/_document.js	0.00% <ø> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f438bf2...57981ca. Read the comment docs.

[LowLifeArcade]

Looks good @ChrisBit. Thanks for contributing! Merging.