fix image not displaying in GitLab due to faulty markdown

doc/development/architecture.md

@@ -28,7 +28,7 @@ To serve repositories over SSH there's an add-on application called gitlab-shell
 
 ## Components
 
-![GitLab Diagram Overview](resources/gitlab_diagram_overview.png "GitLab Diagram Overview")
+![GitLab Diagram Overview](resources/gitlab_diagram_overview.png)
 
 A typical install of GitLab will be on Ubuntu Linux or RHEL/CentOS.
 It uses Nginx or Apache as a web front end to proxypass the Unicorn web server.
@@ -180,4 +180,4 @@ bundle exec rake gitlab:check RAILS_ENV=production
 ```
 
 Note: It is recommended to log into the `git` user using `sudo -i -u git` or `sudo su - git`.
-While the sudo commands provided by gitlabhq work in Ubuntu they do not always work in RHEL.
+While the sudo commands provided by gitlabhq work in Ubuntu they do not always work in RHEL.
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