Add ?: where it's needed

Change capture group to non capture group where it can be done as @q--
recommend there
https://github.com/ElbertF/Wappalyzer/commit/f5f17df693134520eb8151f0d347d79cf58b26e2#commitcomment-2726854
Merge pull request #270 from gadcam/master

Add :? where it's needed