Tidy up dependabot.yml

Author: Mark Whitaker

.github/dependabot.yml

@@ -1,11 +1,8 @@
-# Please see the documentation for all configuration options:
-# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
-
 version: 2
 updates:
-  - package-ecosystem: "npm" # See documentation for possible values
-    directory: "/" # Location of package manifests
+  - package-ecosystem: npm
+    directory: /
     schedule:
-      interval: "weekly"
+      interval: weekly
     assignees:
-      - "markwhitaker"
+      - markwhitaker