#224 changed TypeUrl to TypeURL

[kigamittsu]

fix #224

[codecov-io]

Codecov Report

Merging #235 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #235   +/-   ##
=======================================
  Coverage   57.64%   57.64%           
=======================================
  Files           3        3           
  Lines         654      654           
=======================================
  Hits          377      377           
  Misses        219      219           
  Partials       58       58

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[slimsag]

Thank you & apologies for the delayed review :) Feel free to send a PR adding yourself to the https://github.com/gopherjs/vecty/blob/master/CONTRIBUTORS list if you like!