Multiple fixes to Raven documentation

Intent was to fix OAuth credential creation (#25 (closed) and #20 (closed)) but also did clarification for #27 (closed), ldap correction #21 (closed) and general papercuts in passing.

Closes: #25 (closed) #20 (closed) #27 (closed) #21 (closed)

changed milestone to %DevOps Sprint 153

assigned to @rjg21

marked this merge request as ready

changed the description

requested review from @amc203

approved this merge request

merged

mentioned in commit b2635f67