Add doc for RequiredFields function

Signed-off-by: Sergen Yalçın <yalcinsergen97@gmail.com>

pkg/config/resource.go

@@ -495,6 +495,7 @@ type Resource struct {
 	requiredFields []string
 }
 
+// RequiredFields returns slice of the marked as required fieldpaths.
 func (r *Resource) RequiredFields() []string {
 	return r.requiredFields
 }

pkg/types/builder.go

@@ -380,10 +380,7 @@ func newTopLevelRequiredParam(path string, includeInit bool) *topLevelRequiredPa
 }
 
 func (r *resource) addParameterField(f *Field, field *types.Var) {
-	requiredBySchema := !f.Schema.Optional
-	if f.Required {
-		requiredBySchema = f.Required
-	}
+	requiredBySchema := !f.Schema.Optional || f.Required
 	// Note(turkenh): We are collecting the top level required parameters that
 	// are not identifier fields. This is for generating CEL validation rules for
 	// those parameters and not to require them if the management policy is set