Update ISSUE_TEMPLATE

ISSUE_TEMPLATE

 *** PLEASE DO NOT IGNORE THIS ISSUE TEMPLATE ***
 
 Please search the existing issues before filing a new one, including issues that
-are closed. When filing a new issue please include all of the following, unless
+are closed. When filing a new issue please include ALL of the following, unless
 you're certain that they're not useful for the particular issue being reported.
 
 - A description of the issue.