chore: fix comments

Author: liuxiaocs7

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingMemStore.java

@@ -845,8 +845,8 @@ public void testMagicCompaction3Buckets() throws IOException {
     memstore.clearSnapshot(snapshot.getId());
   }
 
-  @Test
   @Override
+  @Test
   public void testScan() throws IOException {
     scanMemStore(memstore, 6635);
   }

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingToCellFlatMapMemStore.java

@@ -920,8 +920,8 @@ public void testBigCellSizeAfterInMemoryCompaction() throws IOException {
     }
   }
 
-  @Test
   @Override
+  @Test
   public void testScan() throws IOException {
     scanMemStore(memstore, 915);
   }