No issue: Fix typo in FML

[eliserichards]

We were spelling "highlight" with an extra "t" 😄

Pull Request checklist

• Breaking changes: This PR follows our breaking change policy
  • This PR follows the breaking change policy:
    • This PR has no breaking API changes, or
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Branch builds: add [firefox-android: branch-name] to the PR title.

[jhugman]

Oh perfect, thank you!

[codecov-commenter]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (ecef2d4) 36.67% compared to head (0693727) 36.67%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5888   +/-   ##
=======================================
  Coverage   36.67%   36.67%           
=======================================
  Files         348      348           
  Lines       33607    33607           
=======================================
  Hits        12324    12324           
  Misses      21283    21283           

Files	Coverage Δ
...ponents/support/nimbus-fml/src/client/inspector.rs	0.00% <0.00%> (ø)

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