Fix invalid stylesheet link in blog tag pageUpdate angular.html

[AyushI7G]

Removed an invalid stylesheet reference (https://grails.apache.org) which does not point to a valid CSS resource.

The page already includes proper stylesheet files, so this link appears unnecessary.

[sanjana2505006]

Nice catch @AyushI7G on that invalid stylesheet link! It's definitely not supposed to be there. I did a quick search and noticed this same line is actually on all the other tag pages in blog/tag/ as well (like webinar.html and micronaut.html).

If you have a second, it’d be awesome to just clear them all out in this PR so we’re fully covered. Also, there’s an empty <script src=''></script> right next to it that’s probably worth deleting while you're at it. Great spot on this!