fixed errors for buf generate

proto/gosdn/pnd/pnd.proto

@@ -68,13 +68,12 @@ service pnd {
   // managed by a specific Principal Network Domain.
   rpc GetPath(GetPathRequest) returns (GetPathResponse) {
     option (google.api.http) = {
-      get: "/v1/pnd/{pid}/ond/{did}/change"
-      body: "*"
+      get: "/v1/pnd/{pid}/ond/{did}/path/{path}"
     };
   }
   rpc SetPath(SetPathRequest) returns (SetResponse) {
     option (google.api.http) = {
-      set: "/v1/pnd/{pid}/ond/{did}/change"
+      post: "/v1/pnd/{pid}/ond/{did}/path"
       body: "*"
     };
   }
@@ -198,7 +197,8 @@ message SetChangeRequest {
 message SetPathRequest {
   int64 timestamp = 1;          // Timestamp in nanoseconds since Epoch.
   repeated ChangeRequest changeRequest = 2;
-  string pid = 3;
+  string did = 3;
+  string pid = 4;
 }
 
 message setOnd {
@@ -228,10 +228,9 @@ message ChangeRequest {
     REPLACE = 1;
     DELETE = 2;
   }
-  string id = 1;
-  string path = 2;
-  string value = 3;
-  ApiOperation apiOp = 4;
+  string path = 1;
+  string value = 2;
+  ApiOperation apiOp = 3;
 }
 
 message SetResponse{