I suggest taking a look at your html sanitization settings make sure html isn't allowed in markdown settings.
Next step would be to move the other 2 topics from that category and check if you still see broken markup.
How to show such snippets , and some line about the community ,how to do so ?
Google use the meta description tag.
You can change the value in admin settings -> general -> Site Description
Having a correct description is important for SEO.
@robin4002 If u see in image I shared there are two snippets below of general discussion and nodebb development.
how to set both , how snippets are made. I don't have any idea .
because when I open my site in google , my users names are coing in snippets that's look little weird.
I don't know what criteria Google uses for the snippets, sorry :/
@abhinov-singh As stated in other thread, please consider upgrading your NodeBB as that may resolve the issue. Locking this thread now to reduce duplicate responses.