made the security vulnerability section a bit more obvious

CONTRIBUTING.md

@@ -13,6 +13,11 @@ If you are writing contributions as part of employment from another company / in
 
 Chances are somebody has run into this problem before. After consulting our [documentation](https://docs.nodebb.org/en/latest/installing/os.html), please head over to our [community support forum](https://community.nodebb.org) for advice.
 
+# Found a Security Vulnerability?
+
+If you believe you have identified a security vulnerability with NodeBB, report it as soon as possible via email to **security@nodebb.org**.
+A member of the NodeBB security team will respond to the issue.
+Please do not post it to the public bug tracker.
 
 # Issues & Bugs
 
@@ -20,11 +25,6 @@ Thanks for reporting an issue with NodeBB! Please follow these guidelines in ord
 
 In general, if we can't reproduce it, we can't fix it!
 
-> #### **Important**
-> If you believe you have identified a security vulnerability with NodeBB, report it as soon as possible via email to **security@nodebb.org**.
-> A member of the NodeBB security team will respond to the issue.
-> Please do not post it to the public bug tracker.
-
 ## Try the latest version of NodeBB
 
 There is a chance that the issue you are experiencing may have already been fixed.