doc: add full list of subsystems

iam-frankqiu · iam-frankqiu · commit 3eebd6b17d3d · 2021-09-02T20:28:34.000+08:00
diff --git a/doc/guides/contributing/pull-requests.md b/doc/guides/contributing/pull-requests.md
@@ -579,6 +579,7 @@ If you want to know more about the code review and the landing process, see the
 * `test`
 * `tools`
 
+Here is the full list of [subsystems][subsystems].
 More than one subsystem may be valid for any particular issue or pull request.
 
 [Building guide]: ../../../BUILDING.md
@@ -593,3 +594,4 @@ More than one subsystem may be valid for any particular issue or pull request.
 [https://ci.nodejs.org/]: https://ci.nodejs.org/
 [pull request template]: https://raw.githubusercontent.com/nodejs/node/HEAD/.github/PULL_REQUEST_TEMPLATE.md
 [running tests]: ../../../BUILDING.md#running-tests
+[subsystems]: https://github.com/nodejs/core-validate-commit/blob/main/lib/rules/subsystem.js
