Merge pull request #11934 from lucalves/feature/updating-docs

Provide a description for the code scanning permissions

Author: mchammer01

content/organizations/managing-peoples-access-to-your-organization-with-roles/managing-custom-repository-roles-for-an-organization.md

@@ -87,9 +87,9 @@ You can only choose an additional permission if it's not already included in the
 
 ### Security
 
-- **Read {% data variables.product.prodname_code_scanning %} results**
-- **Write {% data variables.product.prodname_code_scanning %} results**
-- **Delete {% data variables.product.prodname_code_scanning %} results**
+- **Read {% data variables.product.prodname_code_scanning %} results**: Provide users with read permissions for {% data variables.product.prodname_code_scanning %} alerts.
+- **Write {% data variables.product.prodname_code_scanning %} results**: Provide users with write permissions for {% data variables.product.prodname_code_scanning %} alerts.
+- **Delete {% data variables.product.prodname_code_scanning %} results**: Provide users with delete permissions for {% data variables.product.prodname_code_scanning %} alerts.
 
 ## Precedence for different levels of access