Update index.html

Author: phenax

index.html

@@ -97,6 +97,14 @@ <h1>is-a-dev</h1>
         To register your own subdomain, go to <a href="https://github.com/is-a-dev/register">is-a-dev repository</a> and follow the instructions.
       </p>
 
+      <h2>Report abuse</h2>
+      <p>
+        If you believe one of the subdomains is abusing the service,
+        <a href="https://github.com/is-a-dev/register/issues/new?labels=report-abuse&template=report-abuse.md&title=Report+abuse" target="_blank">
+          please report it
+        </a>
+      </p>
+
       <h2>Donations</h2>
       <p>This project is a free service for developers and will stay that way. Please consider donating to help me keep this running forever!</p>