Fix typo in mozillaonline build option

[bhearsum]

Per #16314

[codecov-commenter]

Codecov Report

Merging #20006 (458abb5) into master (8bd5ebf) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master   #20006      +/-   ##
============================================
- Coverage     36.89%   36.86%   -0.03%     
- Complexity     1629     1630       +1     
============================================
  Files           541      541              
  Lines         20975    21021      +46     
  Branches       3119     3124       +5     
============================================
+ Hits           7738     7750      +12     
- Misses        12345    12378      +33     
- Partials        892      893       +1     

Impacted Files	Coverage Δ
...a/org/mozilla/gecko/search/SearchWidgetProvider.kt	30.95% <0.00%> (-5.89%)	⬇️

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[jmaher]

THE WHOLE WORLD SHOULD BE IN CAPS :)