[MINOR][PYSPARK][DOC] Fix wrongly formatted examples in PySpark documentation

## What changes were proposed in this pull request?

This PR fixes wrongly formatted examples in PySpark documentation as below:

- **`SparkSession`**

  - **Before**

    ![2016-07-06 11 34 41](https://cloud.githubusercontent.com/assets/6477701/16605847/ae939526-436d-11e6-8ab8-6ad578362425.png)

  - **After**

    ![2016-07-06 11 33 56](https://cloud.githubusercontent.com/assets/6477701/16605845/ace9ee78-436d-11e6-8923-b76d4fc3e7c3.png)

- **`Builder`**

  - **Before**
    ![2016-07-06 11 34 44](https://cloud.githubusercontent.com/assets/6477701/16605844/aba60dbc-436d-11e6-990a-c87bc0281c6b.png)

  - **After**
    ![2016-07-06 1 26 37](https://cloud.githubusercontent.com/assets/6477701/16607562/586704c0-437d-11e6-9483-e0af93d8f74e.png)

This PR also fixes several similar instances across the documentation in `sql` PySpark module.

## How was this patch tested?

N/A

Author: hyukjinkwon <gurwls223@gmail.com>

Closes #14063 from HyukjinKwon/minor-pyspark-builder.

1 files changed, 7 insertions, 6 deletions

diff --git a/python/pyspark/sql/session.py b/python/pyspark/sql/session.py
index 55f86a16f5..a360fbefa4 100644
--- a/python/pyspark/sql/session.py
+++ b/python/pyspark/sql/session.py
@@ -66,12 +66,11 @@ class SparkSession(object):
     tables, execute SQL over tables, cache tables, and read parquet files.
     To create a SparkSession, use the following builder pattern:
 
-    >>> spark = SparkSession.builder \
-            .master("local") \
-            .appName("Word Count") \
-            .config("spark.some.config.option", "some-value") \
-            .getOrCreate()
-
+    >>> spark = SparkSession.builder \\
+    ...     .master("local") \\
+    ...     .appName("Word Count") \\
+    ...     .config("spark.some.config.option", "some-value") \\
+    ...     .getOrCreate()
     """
 
     class Builder(object):
@@ -87,11 +86,13 @@ class SparkSession(object):
             both :class:`SparkConf` and :class:`SparkSession`'s own configuration.
 
             For an existing SparkConf, use `conf` parameter.
+
             >>> from pyspark.conf import SparkConf
             >>> SparkSession.builder.config(conf=SparkConf())
             <pyspark.sql.session...
 
             For a (key, value) pair, you can omit parameter names.
+
             >>> SparkSession.builder.config("spark.some.config.option", "some-value")
             <pyspark.sql.session...