Merge branch 'ce-12873-support-restricting-group-access-by-multiple-ip-subnets' into 'master'

CE Port: Support restricting group access by multiple IP subnets

See merge request gitlab-org/gitlab-ce!31959

doc/user/group/index.md

@@ -342,7 +342,7 @@ underlying projects, issues, etc, by IP address. This can help ensure that
 particular content doesn't leave the premises, while not blocking off access to
 the entire instance.
 
-Add whitelisted IP subnet using CIDR notation to the group settings and anyone
+Add one or more whitelisted IP subnets using CIDR notation in comma separated format to the group settings and anyone
 coming from a different IP address won't be able to access the restricted
 content.