[ENT-8343] feat: marked skills-quiz strings for i18n

[mahamakifdar19]

Jira Ticket: https://2u-internal.atlassian.net/browse/ENT-8343
description: Marked skills-quiz strings for i18n

For all changes

• Ensure adequate tests are in place (or reviewed existing tests cover changes)

Only if submitting a visual change

• Ensure to attach screenshots
• Ensure to have UX team confirm screenshots

[codecov]

Codecov Report

Attention: Patch coverage is 88.88889% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 84.64%. Comparing base (d36b78a) to head (19b22e2).
Report is 168 commits behind head on master.

Files	Patch %	Lines
src/components/skills-quiz/SkillsQuizStepper.jsx	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #989      +/-   ##
==========================================
- Coverage   84.87%   84.64%   -0.23%     
==========================================
  Files         320      342      +22     
  Lines        6399     7476    +1077     
  Branches     1552     1841     +289     
==========================================
+ Hits         5431     6328     +897     
- Misses        941     1110     +169     
- Partials       27       38      +11     

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[muhammad-ammar]

Looks great. Just some minor comments regarding updating the descriptions to add more context.