Update ISSUE_TEMPLATE

ISSUE_TEMPLATE

@@ -2,27 +2,20 @@
 
 Before filing an issue:
 -----------------------
-
-- Search existing issues, including issues that are closed. If an existing issue
-  exists, please do not file a new one.
-
+- Search existing issues, including issues that are closed.
 - Consult our FAQs, supported devices and supported formats pages. These can be
   found at https://google.github.io/ExoPlayer/.
-
 - Rule out issues in your own code. A good way to do this is to try and
   reproduce the issue in the ExoPlayer demo app.
-
 - This issue tracker is intended for bugs, feature requests and ExoPlayer
   specific questions. If you're asking a general Android development question,
   please do so on Stack Overflow.
 
 When reporting a bug:
 -----------------------
-
-Please fill out the sections below, leaving the section headers but replacing the
-content. If you're unable to provide certain information, please explain why in the
-relevant section. We may close issues without investigation if they do not include
-sufficient information.
+Fill out the sections below, leaving the headers but replacing the content. If
+you're unable to provide certain information, please explain why in the relevant
+section. We may close issues if they do not include sufficient information.
 
 ### Issue description
 Describe the issue in detail, including observed and expected behavior.