* Fix anchor id for 'Configuring Response Handling Examples' header
* Move heading anchor links to right of heading
To make sure they don't get cut off by weird browsers.
Also make the anchor link text the 'link' emoji which is more fun than
the hashtag.
* Keep anchor links on the left
* Make entire header the anchor link and show link emoji on hover
* Fix anchor link colour in dark mode
* Revert anchor link icon to hash character
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Co-authored-by: 1cg <469183+1cg@users.noreply.github.com>