fix: update namespace for coder-labs template

Author: buenos-nachos

registry/coder-labs/templates/tasks-docker/README.md

@@ -2,7 +2,7 @@
 display_name: Tasks on Docker
 description: Run Coder Tasks on Docker with an example application
 icon: ../../../../.icons/tasks.svg
-maintainer_github: coder
+maintainer_github: coder-labs
 verified: false
 tags: [docker, container, ai, tasks]
 ---