fix(server): fix ai review

Author: Tsukilc

hugegraph-server/hugegraph-api/src/main/java/org/apache/hugegraph/api/auth/ManagerAPI.java

@@ -29,7 +29,6 @@
 import org.apache.hugegraph.auth.HugePermission;
 import org.apache.hugegraph.core.GraphManager;
 import org.apache.hugegraph.define.Checkable;
-import org.apache.hugegraph.server.RestServer;
 import org.apache.hugegraph.util.E;
 import org.apache.hugegraph.util.Log;
 import org.slf4j.Logger;
@@ -55,7 +54,7 @@
 @Tag(name = "ManagerAPI")
 public class ManagerAPI extends API {
 
-    private static final Logger LOG = Log.logger(RestServer.class);
+    private static final Logger LOG = Log.logger(ManagerAPI.class);
 
     @POST
     @Timed

hugegraph-server/hugegraph-api/src/main/java/org/apache/hugegraph/api/auth/TargetAPI.java

@@ -173,6 +173,17 @@ public HugeTarget build() {
             return target;
         }
 
+        @Override
+        public String toString() {
+            return "JsonTarget{" +
+                   "name='" + name + '\'' +
+                   ", graph='" + graph + '\'' +
+                   ", url='" + url + '\'' +
+                   ", resources=" + resources +
+                   '}';
+        }
+
+
         @Override
         public void checkCreate(boolean isBatch) {
             E.checkArgumentNotNull(this.name,