Change "HTMLOptionsElement" to "HTMLOptionsCollection" in exceptions.

There is no HTMLOptionsElement interface.

This is a follow up to r162625
https://codereview.chromium.org/83433002

BUG=270033

Review URL: https://codereview.chromium.org/85863002

git-svn-id: svn://svn.chromium.org/blink/trunk@162633 bbb929c8-8fbe-4397-9dbb-9b2b20218538