diff --git a/lib/modules/manager/custom/regex/readme.md b/lib/modules/manager/custom/regex/readme.md
index e1fb5f5d799cb2..bc9c96dc64fc68 100644
--- a/lib/modules/manager/custom/regex/readme.md
+++ b/lib/modules/manager/custom/regex/readme.md
@@ -90,9 +90,9 @@ Instead you enhance your `Dockerfile` like this:
 ```Dockerfile
 ARG IMAGE=node:12@sha256:6e5264cd4cfaefd7174b2bc10c7f9a1c2b99d98d127fc57a802d264da9fb43bd
 FROM ${IMAGE}
- # renovate: datasource=github-tags depName=nodejs/node versioning=node
+# renovate: datasource=github-tags depName=nodejs/node versioning=node
 ENV NODE_VERSION=10.19.0
- # renovate: datasource=github-releases depName=composer/composer
+# renovate: datasource=github-releases depName=composer/composer
 ENV COMPOSER_VERSION=1.9.3
 # renovate: datasource=docker depName=docker versioning=docker
 ENV DOCKER_VERSION=19.03.1