Update the pull request template.

Author: nedtwigg

PULL_REQUEST_TEMPLATE.md

@@ -2,15 +2,15 @@ Please make sure that your [PR allows edits from maintainers](https://help.githu
 
 ![Allow edits from maintainers](https://help.github.com/assets/images/help/pull_requests/allow-maintainers-to-make-edits-sidebar-checkbox.png)
 
-After creating the PR, please add a commit that adds a bullet-point under the `-SNAPSHOT` section of [CHANGES.md](https://github.com/diffplug/spotless/blob/main/CHANGES.md), [plugin-gradle/CHANGES.md](https://github.com/diffplug/spotless/blob/main/plugin-gradle/CHANGES.md), and [plugin-maven/CHANGES.md](https://github.com/diffplug/spotless/blob/main/plugin-maven/CHANGES.md) which includes:
+After creating the PR, please add a commit that adds a bullet-point under the `[Unreleased]` section of [CHANGES.md](https://github.com/diffplug/spotless/blob/main/CHANGES.md), [plugin-gradle/CHANGES.md](https://github.com/diffplug/spotless/blob/main/plugin-gradle/CHANGES.md), and [plugin-maven/CHANGES.md](https://github.com/diffplug/spotless/blob/main/plugin-maven/CHANGES.md) which includes:
 
 - [ ] a summary of the change
 - either
     - [ ] a link to the issue you are resolving (for small changes)
     - [ ] a link to the PR you just created (for big changes likely to have discussion)
 
-If your change only affects a build plugin, and not the lib, then you only need to update the `CHANGES.md` for that plugin.
+If your change only affects a build plugin, and not the lib, then you only need to update the `plugin-foo/CHANGES.md` for that plugin.
 
-If your change affects lib in an end-user-visible way (fixing a bug, updating a version) then you need to update `CHANGES.md` for both the lib and the build plugins.  Users of a build plugin shouldn't have to refer to lib to see changes that affect them.
+If your change affects lib in an end-user-visible way (fixing a bug, updating a version) then you need to update `CHANGES.md` for both the lib and all build plugins.  Users of a build plugin shouldn't have to refer to lib to see changes that affect them.
 
 This makes it easier for the maintainers to quickly release your changes :)