Fix minor typo in Section and Lesson titles

[kysch13]

Because

Fixes minor typo in a section and lesson title (Organizing Your Javascript Code...)

This PR

Capitalized the 'S' in 'Javascript'

Issue

Closes #4849

Additional Information

Pull Request Requirements

• I have thoroughly read and understand The Odin Project Contributing Guide
• The title of this PR follows the keyword: brief description of change format, using one of the following keywords:
  • Feature - adds new or amends existing user-facing behavior
  • Chore - changes that have no user-facing value, refactors, dependency bumps, etc
  • Fix - bug fixes
• The Because section summarizes the reason for this PR
• The This PR section has a bullet point list describing the changes in this PR
• I have verified all tests and linters pass after making these changes.
• If this PR addresses an open issue, it is linked in the Issue section
• If applicable, this PR includes new or updated automated tests

[rlmoser99]

Thank you for taking the time to make this issue and also to make a PR with the fix!

[kysch13]

@rlmoser99 No problem! Thank you for giving me the chance to contribute :)