Update dependabot.yml

Author: BretFisher

.github/dependabot.yml

@@ -12,10 +12,16 @@ updates:
     schedule:
       interval: "daily"
 
+  # Add this section for each directory with a Dockerfile, K8s manifest, or Helm chart
+  # They must use a semver tag, and Dependabot must be able to access the registry
+  # You can give it access to private ones:
+  # https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#configuration-options-for-private-registries
+  # follow along on a feature request to support multiple directories in one package-ecosystem
+  # https://github.com/dependabot/dependabot-core/issues/2178
   - package-ecosystem: "docker"
     directory: "/"
     schedule:
       interval: "weekly"
     commit-message:
-      # Prefix all commit messages with "[docker] " (no colon, but a trailing whitespace)
-      prefix: "[docker] "
+      # Prefix all commit messages with "[docker] "
+      prefix: "[docker] "