Update .stickler.yml

Anand Sanmukhani · web-flow · commit c357222e8eac · 2019-08-07T16:44:09.000-04:00
Enable fixers for stickler-ci so it can automatically format new PRs using black
diff --git a/.stickler.yml b/.stickler.yml
@@ -3,3 +3,5 @@ linters:
     black:
         config: ./pyproject.toml
         fixer: true
+fixers:
+    enable: true
