HDFS-14868. RBF: Fix typo in TestRouterQuota. Contributed by Jinglun.

Reviewed-by: Ayush Saxena <ayushsaxena@apache.org>
Signed-off-by: Wei-Chiu Chuang <weichiu@apache.org>

hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterQuota.java

@@ -177,7 +177,7 @@ public class TestRouterQuota {
   }
 
   @Test
-  public void testStorageSpaceQuotaaExceed() throws Exception {
+  public void testStorageSpaceQuotaExceed() throws Exception {
     long ssQuota = 3071;
     final FileSystem nnFs1 = nnContext1.getFileSystem();
     final FileSystem nnFs2 = nnContext2.getFileSystem();