[MINOR][DOC] Fix supported hive version in doc

## What changes were proposed in this pull request?

Today, Spark 1.6.1 and updated docs are release. Unfortunately, there is obsolete hive version information on docs: [Building Spark](http://spark.apache.org/docs/latest/building-spark.html#building-with-hive-and-jdbc-support). This PR fixes the following two lines.
```
-By default Spark will build with Hive 0.13.1 bindings.
+By default Spark will build with Hive 1.2.1 bindings.
-# Apache Hadoop 2.4.X with Hive 13 support
+# Apache Hadoop 2.4.X with Hive 1.2.1 support
```
`sql/README.md` file also describe

## How was this patch tested?

Manual.

(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)

Author: Dongjoon Hyun <dongjoon@apache.org>

Closes #11639 from dongjoon-hyun/fix_doc_hive_version.

docs/building-spark.md

@@ -108,9 +108,9 @@ mvn -Pyarn -Phadoop-2.3 -Dhadoop.version=2.3.0 -Dyarn.version=2.2.0 -DskipTests
 # Building With Hive and JDBC Support
 To enable Hive integration for Spark SQL along with its JDBC server and CLI,
 add the `-Phive` and `Phive-thriftserver` profiles to your existing build options.
-By default Spark will build with Hive 0.13.1 bindings.
+By default Spark will build with Hive 1.2.1 bindings.
 {% highlight bash %}
-# Apache Hadoop 2.4.X with Hive 13 support
+# Apache Hadoop 2.4.X with Hive 1.2.1 support
 mvn -Pyarn -Phadoop-2.4 -Dhadoop.version=2.4.0 -Phive -Phive-thriftserver -DskipTests clean package
 {% endhighlight %}