updated security page with headers

updated according to email conversation

source/security/index.html

@@ -22,11 +22,11 @@ title: Security
For community contributions, we enforce <a href ="https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides">style guides</a>.
In addition, both for community contributions and for internal development, we use <a href="http://brakemanscanner.org/">brakeman</a> and <a href="https://github.com/bbatsov/rubocop">RuboCop </a> run by GitLab CI.
</p>
-            <p>
-                We engage security experts to do white box testing.
-            </p>
-                GitLab also has a <a href="https://about.gitlab.com/disclosure/">responsible disclosure program </a>.
-            </p>
+        
+        <h3>We engage security experts to do white box testing.<h3>
+        
+        <h3>GitLab also has a <a href="https://about.gitlab.com/disclosure/">responsible disclosure program </a>.<h3>
+        
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