message: Comment out TODO in Readme
  The link to the bug shows up in the Readme section for the examples, which is a bit strange.
diff: @@ -93,7 +93,7 @@ category[1]: 'Positive' : '0.18687'
  #### Prerequisites
  -TODO(b/163086702): Update the links to models with metadata attached.
  +<!-- TODO(b/163086702): Update the links to models with metadata attached. -->
  You will need:
  