Update and rename RELEASE_TEMPLATE.md to RELEASE_ISSUE_TEMPLATE.md

docs/RELEASE_TEMPLATE.md → docs/RELEASE_ISSUE_TEMPLATE.md

-# Go-IPFS Changelog Template
+> Release Issue Template
 
-## X.Y.Z YYYY-MM-DD
+# go-ipfs X.Y.Z Release
 
 We're happy to announce go-ipfs X.Y.Z, bla bla...
 
-< release notes >
+## Highlights
 
-### Contributors
+< top highlights for this release notes >
+
+## Changelog
+
+< changelog generated by bin/mkreleaselog >
+
+## Contributors
 
 < list generated by bin/mkreleaselog >
 
@@ -18,10 +24,7 @@ Would you like to contribute to the IPFS project and don't know how? Well, there
 - Join the discussion at http://discuss.ipfs.io/ and help users finding their answers.
 - Join the [Go Core Dev Team Weekly Sync](https://github.com/ipfs/team-mgmt/issues/650) and be part of the Sprint action!
 
-### ⁉️ Do you have questions?
+## ⁉️ Do you have questions?
 
 The best place to ask your questions about IPFS, how it works and what you can do with it is at [discuss.ipfs.io](http://discuss.ipfs.io). We are also available at the `#ipfs` channel on Freenode, which is also [accessible through our Matrix bridge](https://riot.im/app/#/room/#freenode_#ipfs:matrix.org).
 
-### Changelog
-
-< changelog generated by bin/mkreleaselog >