Update issue_template.md

Updated with some additional information

issue_template.md

@@ -7,3 +7,7 @@ Please ensure the following information is provided when logging a new issue:
   <li>Specifications like the version of the library, operating system etc</li>
   <li>Relevant logs and traces</li>
 </ul>
+
+<b>Please note: Do not include sensitive information like PII, OII, credentials, secrets, and tokens.</b>
+
+For <b>privacy/security</b> issues please see instructions <a href="https://github.com/AzureAD/azure-activedirectory-library-for-android/blob/dev/README.md#security-reporting">here</a>