Change anchor mechanic

### What is the problem this feature will solve?

We encountered duplicate titles in headers. (In bocks)
It's bad for the SEO of the page:

- Repeating keywords can get you under the Baden-Baden filter. https://webmaster .yandex.ru/blog/baden-baden-i-narusheniya-na-sayte
- Hidden text can also be sanctioned. https://yandex.ru/support/webmaster/threats/hiddentext.html
- The search snippet often contains double headers.This affects the clickability, and consequently reduces the volume of traffic to the site.
- The hash is converted into text and duplicated right on the page.

### What is the feature you are proposing to solve the problem?

I propose to implement the solution for anchors like here: https://cloud.google.com/docs#get-started .

### What alternatives have you considered?

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