update configuration of platformos-check

app/views/pages/developer-guide/platformos-check/platformos-check.liquid

@@ -22,12 +22,9 @@ You can adjust the following settings:
 | check settings   | For each check, set enabled to true or false, set the check severity, set specific ignore files and paths for the check, and configure any other check options. If you created a custom check, then you need to enable it using this method.  You can view the default values of check options in the checks reference.|
 
 ```yaml
-# The directory where theme folders are located
-root: dist
-
 # Paths to custom checks
 require:
-  - ./path/to/my_custom_check.rb
+  - ./path/to/my_custom_check.rb # See https://github.com/Platform-OS/platformos-check/tree/master/lib/platformos_check/checks for inspirations
 
 # Disable a check
 TemplateLength: