Fix extraneous / when calling the /user GitLab API endpoint.

4 jobs for master in 2 minutes and 30 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Doc
passed #330302
doc:api

00:00:30

passed #330303
doc:graphs

00:00:56

 
  Pages
passed #330304
pages

00:01:34

 
  Deploy
passed pages:deploy

00:00:00