message: Remove incorrect extra `)` in tf_upgrade_v2 documentation
  While testing tf_upgrade_v2 noticed there is
  one extra `)` in tf_upgrade_v2 documentation:
  ```
  File "<unknown>", line 7
  tf.argmax([[1, 3, 2]], dimension=0))
  ^
  SyntaxError: invalid syntax
  ```
  This fix fixes the issue.
diff: @@ -47,9 +47,9 @@ e.g.:
  Added keyword 'input' to reordered function 'tf.argmax'
  Renamed keyword argument from 'dimension' to 'axis'
  - Old: tf.argmax([[1, 3, 2]], dimension=0))
  + Old: tf.argmax([[1, 3, 2]], dimension=0)
  ~~~~~~~~~~
  - New: tf.argmax(input=[[1, 3, 2]], axis=0))
  + New: tf.argmax(input=[[1, 3, 2]], axis=0)
  ```
  