Update guides.md

guides.md

@@ -8,7 +8,7 @@ These guides walk you through ways of using CommunityRule. Want a guide on anoth
 
 **[Create your first rule]({% link _guides/first_rule.md %})**
 
-**[Module documentation]**({% link _guides/modules.html %})**
+**[Module documentation]({% link _guides/modules.html %})**
 
 **[Publish a Rule on CommunityRule]({% link _guides/publish_rule.md %})**