[DOC] Fixes formatting typo in SQL programming guide

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Author: Cheng Lian <lian@databricks.com>

Closes #3498 from liancheng/fix-sql-doc-typo and squashes the following commits:

865ecd7 [Cheng Lian] Fixes formatting typo in SQL programming guide

docs/sql-programming-guide.md

@@ -900,7 +900,6 @@ export HIVE_SERVER2_THRIFT_BIND_HOST=<listening-host>
 ./sbin/start-thriftserver.sh \
   --master <master-uri> \
   ...
-```
 {% endhighlight %}
 
 or system properties:
@@ -911,7 +910,6 @@ or system properties:
   --hiveconf hive.server2.thrift.bind.host=<listening-host> \
   --master <master-uri>
   ...
-```
 {% endhighlight %}
 
 Now you can use beeline to test the Thrift JDBC/ODBC server: