[SPARK-4658][SQL] Code documentation issue in DDL of datasource API

Author: ravipesala <ravindra.pesala@huawei.com>

Closes #3516 from ravipesala/ddl_doc and squashes the following commits:

d101fdf [ravipesala] Style issues fixed
d2238cd [ravipesala] Corrected documentation

sql/core/src/main/scala/org/apache/spark/sql/parquet/newParquet.scala

@@ -39,8 +39,8 @@ import scala.collection.JavaConversions._
 
 /**
  * Allows creation of parquet based tables using the syntax
- * `CREATE TABLE ... USING org.apache.spark.sql.parquet`.  Currently the only option required
- * is `path`, which should be the location of a collection of, optionally partitioned,
+ * `CREATE TEMPORARY TABLE ... USING org.apache.spark.sql.parquet`.  Currently the only option 
+ * required is `path`, which should be the location of a collection of, optionally partitioned,
  * parquet files.
  */
 class DefaultSource extends RelationProvider {

sql/core/src/main/scala/org/apache/spark/sql/sources/ddl.scala

@@ -67,7 +67,7 @@ private[sql] class DDLParser extends StandardTokenParsers with PackratParsers wi
   protected lazy val ddl: Parser[LogicalPlan] = createTable
 
   /**
-   * CREATE FOREIGN TEMPORARY TABLE avroTable
+   * CREATE TEMPORARY TABLE avroTable
    * USING org.apache.spark.sql.avro
    * OPTIONS (path "../hive/src/test/resources/data/files/episodes.avro")
    */