Fix doc.rc references in OOD and elsewhere
We seem to reference our docs site with the URL uabrc.github.io in a number of places like knightly's help link and our Cheaha welcome email.
Our docs URLs should use the host name "docs.rc.uab.edu". All places where this is wrong need to be fixed.
Worst offender of all, rc.uab.edu where the docs link still points to the host docs.uabgrid.uab.edu