Merge branch 'docs-gitaly-client-config' into 'master'

Fix Ruby syntax error in Gitaly config example

See merge request !14208

doc/administration/gitaly/index.md

@@ -145,8 +145,8 @@ Omnibus installations:
 ```ruby
 # /etc/gitlab/gitlab.rb
 git_data_dirs({
-  { 'default' => { 'path' => '/mnt/gitlab/default', 'gitaly_address' => 'tcp://gitlab.internal:9999' } },
-  { 'storage1' => { 'path' => '/mnt/gitlab/storage1', 'gitaly_address' => 'tcp://gitlab.internal:9999' } },
+  'default' => { 'path' => '/mnt/gitlab/default', 'gitaly_address' => 'tcp://gitlab.internal:9999' },
+  'storage1' => { 'path' => '/mnt/gitlab/storage1', 'gitaly_address' => 'tcp://gitlab.internal:9999' },
 })
 
 gitlab_rails['gitaly_token'] = 'abc123secret'