IMPALA-11426: [DOCS] Fix quotes not paired in doc 'impala_alter_table…

….xml'

Change-Id: Ic29292cd3c6247fbf7c604d0618e5fbae53b2f01
Reviewed-on: http://gerrit.cloudera.org:8080/18723
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

docs/topics/impala_alter_table.xml

@@ -102,7 +102,7 @@ ALTER TABLE <varname>name</varname> [PARTITION (<varname>partition_spec</varname
   | SERDEPROPERTIES (<varname>serde_properties</varname>) }
 
 <ph rev="2.6.0 IMPALA-3369">ALTER TABLE <varname>name</varname> <varname>colname</varname>
-  ('<varname>statsKey</varname>'='<varname>val</varname>, ...)
+  ('<varname>statsKey</varname>'='<varname>val</varname>', ...)
 
 statsKey ::= numDVs | numNulls | avgSize | maxSize</ph>
 
@@ -1096,7 +1096,7 @@ alter table sales_data add partition (zipcode = cast(9021 * 10 as string));</cod
           the metastore database that Impala uses to refer to the table. To change which
           underlying Kudu table is associated with an Impala table name, you must change the
           <codeph>TBLPROPERTIES</codeph> property of the table: <codeph>SET
-          TBLPROPERTIES('kudu.table_name'='<varname>kudu_tbl_name</varname>)</codeph>. You can
+          TBLPROPERTIES('kudu.table_name'='<varname>kudu_tbl_name</varname>')</codeph>. You can
           only change underlying Kudu tables for the external tables.
         </li>
       </ul>