Update the help

[pllim]

Tyler Desjardins mentions that we should consider moving emails from help[at]stsci.edu to point to the web portal where possible and appropriate. For HST (or any non-JWST), it is https://hsthelp.stsci.edu . For JWST, it is https://jwsthelp.stsci.edu . Please update info in setup.py, setup.cfg, documentation, etc as appropriate.

Please close this issue if it is irrelevant to your repository. This is an automated issue. If this is opened in error, please let pllim know!

xref spacetelescope/hstcal#317

[SaOgaz]

Didn't come up anywhere on this repo, and looks like it's going to be moved anyway, so closing this issue.