Change component for ChromeVox bugs.

Bug: N/A
Change-Id: I360d0e27e22241f8617d1d74f1fd42d33ae44a6e
AX-Relnotes: N/A
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2226921Reviewed-by: David Tseng <dtseng@chromium.org>
Commit-Queue: Akihiro Ota <akihiroota@chromium.org>
Cr-Commit-Position: refs/heads/master@{#774619}

chrome/browser/resources/chromeos/accessibility/chromevox/background/command_handler.js

@@ -202,7 +202,7 @@ CommandHandler.onCommand = function(command) {
     case 'reportIssue':
       let url = 'https://code.google.com/p/chromium/issues/entry?' +
           'labels=Type-Bug,Pri-2,OS-Chrome&' +
-          'components=UI>accessibility>ChromeVox&' +
+          'components=OS>Accessibility>ChromeVox&' +
           'description=';
 
       const description = {};