x/pkgsite: clicking a link to an anchor for an example does not show the example

[dcormier]

What is the URL of the page with the issue?

https://pkg.go.dev/github.com/aws/aws-sdk-go/service/dynamodb/expression?tab=doc#pkg-examples

What is your user agent?

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:73.0) Gecko/20100101 Firefox/73.0

Screenshot

Clicking this link (bottom of image):

Results in the browser going here:

What did you do?

I clicked a link in the Examples section.

What did you expect to see?

The example I clicked.

What did you see instead?

I saw the page just below the anchor for the example, with the anchor itself hidden by the page navigation header and not visible at all.

[julieqiu]

This issue seems to be related to #37520. Also related - #37819.