suitable description better filtering

[MQ37]

Find a better way to filter out pages like https://docs.apify.com/api/v2 that contain whole MarkDown document inside <meta name=description> content.

Currently meta descriptions like this are filtered out if they contain \n char.

Like this:

<meta data-rh=true name=description content='
> **UPDATE 2024-07-09:**
> We have rolled out this new Apify API Documentation. In case of any issues, please [report here](https://github.com/apify/openapi/issues).
> The old API Documentation is still [available here](https://docs.apify.com/api/v2-old).
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