docs: Refine list of fields supporting handlebars templates (#17943)

docs/usage/templates.md

@@ -5,7 +5,7 @@ description: Explain Renovate template fields
 
 # Template fields
 
-In order to provide flexible configuration, Renovate supports using "templates" for certain fields like `branchName`.
+In order to provide flexible configuration, Renovate supports using "templates" for certain fields like `addLabels`, `branchName`, `extractVersionTemplate`, `labels`.
 
 Renovate's templates use [handlebars](https://handlebarsjs.com/) under the hood.
 You can recognize templates when you see strings like `{{depName}}` in configuration fields.