fix(lang): Update el.json

[manosvelivasakis]

Description

Updated Greek translation.

Specific Changes proposed

• Added some missing translations on el.json.
• Updated translations-needed.md.

Requirements Checklist

• Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • Change has been verified in an actual browser (Chrome, Firefox, IE)
  • Unit Tests updated or fixed
  • Docs/guides updated
  • Example created (starter template on JSBin)
  • Has no DOM changes which impact accessiblilty or trigger warnings (e.g. Chrome issues tab)
  • Has no changes to JSDoc which cause npm run docs:api to error
• Reviewed by Two Core Contributors

[welcome]

💖 Thanks for opening this pull request! 💖

Things that will help get your PR across the finish line:

• Run npm run lint -- --errors locally to catch formatting errors earlier.
• Include tests when adding/changing behavior.
• Include screenshots and animated GIFs whenever possible.

We get a lot of pull requests on this repo, so please be patient and we will get back to you as soon as we can.

[mister-ben]

Thanks!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.21%. Comparing base (1128425) to head (eabfabd).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8848      +/-   ##
==========================================
- Coverage   83.85%   83.21%   -0.65%     
==========================================
  Files         120      120              
  Lines        8066     8066              
  Branches     1937     1937              
==========================================
- Hits         6764     6712      -52     
- Misses       1302     1354      +52     

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[adrums86]

Merging this before the next tag/release.

[welcome]

Congrats on merging your first pull request! 🎉🎉🎉