Mention linting (#11445)

* Mention linting

* Fix whitespace that the linter doesnt catch

* Review fixes

Author: plaindocs

docs/dev/style-guide.rst

@@ -49,6 +49,21 @@ Content
   * ``:guilabel:`<your username>` dropdown``
 * Make sure that **all bullet list items end with a period**, and don't mix periods with no periods.
 
+Linting
+~~~~~~~
+
+ReStructuredText for both the RTD user documentation and this developer documentation is linted with `pre-commit` for broken links,
+whitespace consistency, and other minor issues.
+
+You can fix many linting issues automatically by installing and running `pre-commit` locally.
+To run it on content you have have already committed, use the ``--from-ref`` and ``--to-ref`` `flags <https://pre-commit.com/#pre-commit-run>`__.
+
+.. code-block:: bash
+
+   pre-commit run --from-ref <OLDER_COMMIT> --to-ref <RECENT_COMMIT>
+
+Or use ``pre-commit run --all-files`` to lint all files.
+
 Word list
 ---------