fix rules and guidelines link (#1706)

Signed-off-by: Bob Killen <[email protected]>

Author: mrbobbytables

governance/tag-governance.md

@@ -61,7 +61,7 @@ different purposes or have different scopes:
   - [Requirements](#requirements-5)
   - [Roles](#roles)
 - [Community Groups](#technical-community-groups)
-  - [Rules & Guidelines](#rules-&-guidelines)
+  - [Rules & Guidelines](#rules--guidelines)
   - [Formation](#formation-3)
 
 ## Keywords