Update ISSUE_TEMPLATE.md (#4214)

* Update ISSUE_TEMPLATE.md

* Update ISSUE_TEMPLATE.md

* Wording

* Combine comment

.github/ISSUE_TEMPLATE.md

@@ -1,4 +1,20 @@
-<!-- For ugly or incorrect code issues: Please use this template.
+<!--
+
+BEFORE SUBMITTING AN ISSUE:
+
+1. Search for your issue on GitHub: https://github.com/prettier/prettier/issues
+   A large number of opened issues are duplicates of existing issues.
+   If someone has already opened an issue for what you are experiencing,
+   you do not need to open a new issue — please add a 👍 reaction to the
+   existing issue instead.
+   
+2. If you are requesting a new option, your request will almost certainly be denied.
+   Please read why here: https://prettier.io/docs/en/option-philosophy.html
+
+3. If your issue is with a prettier editor extension or add-on, please open the
+   issue in the repo for that extension or add-on, instead of this repo.
+
+For ugly or incorrect code issues: Please use the below template.
 
 Tip! Don't write this stuff manually.