.github/workflows: Remove top level heading check

The linter checks if the first line in the file is a top-level heading.
This does not work with markdown files that are included in other files,
not used as such (e.g. files under `hackathons/sessions/*/content/`).

Signed-off-by: Stefan Jumarea <stefanjumarea02@gmail.com>

Author: StefanJum

.github/workflows/config/config.json

@@ -6,5 +6,6 @@
 	"MD014": false,
 	"MD033": false,
 	"MD034": false,
+	"MD041": false,
 	"line-length": false
 }