Apply suggestions from code review

Co-authored-by: Wenxin Du <117315983+duwenxin99@users.noreply.github.com>

Author: Yuan325

cmd/internal/config.go

@@ -163,7 +163,6 @@ func ConvertConfig(raw []byte) ([]byte, error) {
 				// fields such as "tools" in toolsets might pass the first check but
 				// fail to convert to MapSlice
 				if slice, ok := item.Value.(yaml.MapSlice); ok {
-					// Deprecated: convert authSources to authServices
 					switch key {
 					case "authServices":
 						key = "authService"