Update dep-005.md

Remove unused `//helm chart` comment.

docs/reference/dep-005.md

@@ -36,7 +36,7 @@ $ cp -a myplugin/ $(draft home)/plugins/
 ```
 
 ## Building Plugins
-// helm chart
+
 In many ways, a plugin is similar to a chart. Each plugin has a top-level directory, and then a `plugin.yaml` file.
 
 ```shell