Fix enabledManagers in renovate config

Dockerfile

@@ -49,7 +49,7 @@ RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \
   --var version=${MC_SERVER_RUNNER_VERSION} --var app=mc-server-runner --file {{.app}} \
   --from ${GITHUB_BASEURL}/itzg/{{.app}}/releases/download/{{.version}}/{{.app}}_{{.version}}_{{.os}}_{{.arch}}.tar.gz
 
-# renovate: datasource=github-releases depName=itzg/mc-image-helper versioning=loose
+# renovate: datasource=github-releases packageName=itzg/mc-image-helper versioning=loose
 ARG MC_HELPER_VERSION=1.54.0
 ARG MC_HELPER_BASE_URL=${GITHUB_BASEURL}/itzg/mc-image-helper/releases/download/${MC_HELPER_VERSION}
 # used for cache busting local copy of mc-image-helper

renovate.json5

@@ -1,7 +1,7 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "enabledManagers": [
-    "custom"
+    "custom.regex"
   ],
   "customManagers": [
     {