Prettify the .pre-commit-config.yaml file

Author: pradyunsg

.pre-commit-config.yaml

@@ -1,17 +1,19 @@
 repos:
--   repo: local
+  - repo: local
     hooks:
-    -   id: yarn-build-production
+      - id: yarn-build-production
         name: Build src files
         language: system
         entry: bash -c "yarn build:production"
         files: ^src/*
--   repo: https://github.com/psf/black
+
+  - repo: https://github.com/psf/black
     rev: 20.8b1
     hooks:
-    -   id: black
+      - id: black
         language_version: python3
--   repo: https://gitlab.com/pycqa/flake8
+
+  - repo: https://gitlab.com/pycqa/flake8
     rev: 3.8.3
     hooks:
-    -   id: flake8
+      - id: flake8