add comments to issue templates which make the bot validate them

PiperOrigin-RevId: 235685393

.github/ISSUE_TEMPLATE/bug.md

@@ -52,3 +52,7 @@ Specify the devices and versions of Android on which the issue can be
 reproduced, and how easily it reproduces. If possible, please test on multiple
 devices and Android versions.
 
+<!-- DO NOT DELETE
+validate_template=true
+template_path=.github/ISSUE_TEMPLATE/bug.md
+-->

.github/ISSUE_TEMPLATE/content_not_playing.md

@@ -41,4 +41,7 @@ Specify the absolute version number. Avoid using terms such as "latest".
 Specify the devices and versions of Android on which you expect the content to
 play. If possible, please test on multiple devices and Android versions.
 
-
+<!-- DO NOT DELETE
+validate_template=true
+template_path=.github/ISSUE_TEMPLATE/content_not_playing.md
+-->

.github/ISSUE_TEMPLATE/feature_request.md

@@ -28,4 +28,7 @@ A clear and concise description of your proposed solution, if you have one.
 A clear and concise description of any alternative solutions you considered,
 if applicable.
 
-
+<!-- DO NOT DELETE
+validate_template=true
+template_path=.github/ISSUE_TEMPLATE/feature_request.md
+-->

.github/ISSUE_TEMPLATE/question.md

@@ -28,4 +28,7 @@ important for us to know this so that we can improve our documentation.
 ### [REQUIRED] Question
 Describe your question in detail.
 
-
+<!-- DO NOT DELETE
+validate_template=true
+template_path=.github/ISSUE_TEMPLATE/question.md
+-->