Fix extra space in mysql-test README

mysql-test/README

@@ -81,7 +81,7 @@ comments, you can create the result file in one of the following ways:
 
   # mysqltest --record --database test --result-file=r/test_case_name.result < t/test_case_name.test
 
-When this is done, take a look at r/test_case_name.result .
+When this is done, take a look at r/test_case_name.result.
 If the result is incorrect, you have found a bug. In this case, you should
 edit the test result to the correct results so that we can verify that
 the bug is corrected in future releases.