chore: fix typo in description (argoproj#8217)

Signed-off-by: Yujun Zhang <yujunz@nvidia.com>

Author: yujunz

pkg/apiclient/application/application.pb.go

@@ -24,7 +24,7 @@ message ApplicationQuery {
 	repeated string project = 3 [(gogoproto.customname) = "Projects"];
 	// when specified with a watch call, shows changes that occur after that particular version of a resource.
 	optional string resourceVersion = 4 [(gogoproto.nullable) = false];
-	// the selector to to restrict returned list to applications only with matched labels
+	// the selector to restrict returned list to applications only with matched labels
 	optional string selector = 5 [(gogoproto.nullable) = false];
 	// the repoURL to restrict returned list applications
 	optional string repo = 6 [(gogoproto.nullable) = false];