Administrivia: pre-config configuration

Author: rocky

.pre-commit-config.yaml

@@ -2,11 +2,12 @@ repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v2.3.0
     hooks:
-    -   id: check-yaml
-    -   id: end-of-file-fixer
-    -   id: trailing-whitespace
-    -   id: check-json
-        exclude: mathics_scanner/data/characters.json
+    - id: check-yaml
+    - id: debug-statements
+    - id: end-of-file-fixer
+    - id: trailing-whitespace
+    - id: check-json
+      exclude: mathics_scanner/data/characters.json
 -   repo: https://github.com/psf/black
     rev: 21.6b0
     hooks: