[Improvement][Master] Fix typo for MasterTaskExecThreadTest (#9513)

dolphinscheduler-master/src/test/java/org/apache/dolphinscheduler/server/master/runner/MasterTaskExecThreadTest.java

@@ -74,21 +74,21 @@ public class MasterTaskExecThreadTest {
 
     @Test
     public void testExistsValidWorkerGroup2() {
-        Set<String> workerGorups = new HashSet<>();
-        workerGorups.add("test1");
-        workerGorups.add("test2");
+        Set<String> workerGroups = new HashSet<>();
+        workerGroups.add("test1");
+        workerGroups.add("test2");
 
-        /*  Mockito.when(registryCenter.getWorkerGroupDirectly()).thenReturn(workerGorups);
+        /*  Mockito.when(registryCenter.getWorkerGroupDirectly()).thenReturn(workerGroups);
           boolean b = masterTaskExecThread.existsValidWorkerGroup("default");
         Assert.assertFalse(b);*/
     }
 
     @Test
     public void testExistsValidWorkerGroup3() {
-        Set<String> workerGorups = new HashSet<>();
-        workerGorups.add("test1");
-        /*  Mockito.when(registryCenter.getWorkerGroupDirectly()).thenReturn(workerGorups);
-          Mockito.when(registryCenter.getWorkerGroupNodesDirectly("test1")).thenReturn(workerGorups);
+        Set<String> workerGroups = new HashSet<>();
+        workerGroups.add("test1");
+        /*  Mockito.when(registryCenter.getWorkerGroupDirectly()).thenReturn(workerGroups);
+          Mockito.when(registryCenter.getWorkerGroupNodesDirectly("test1")).thenReturn(workerGroups);
         boolean b = masterTaskExecThread.existsValidWorkerGroup("test1");
         Assert.assertTrue(b);*/
     }