There is no right or wrong in this case, it's a matter of perspective.

I don't see mentioning about known online communities to be a problem, however, you may want to keep it a bit more generic (not to paint yourself as someone with no individual knowledge and fully dependent on Stack Overflow or other communities ).

Don't directly say something like "post/ask on <XYZ> site", because it involves the risk of possible data/code leak, you can say something like

> _"If I'm hit with a roadblock that I can't seem to overcome **after initial debugging attempts** from my side, I look for answers available in online technical communities and forums, like Stack Overflow"_.