[MINOR][DOCS] Fix all typos in markdown files of `doc` and similar patterns in other comments

## What changes were proposed in this pull request?

This PR tries to fix all typos in all markdown files under `docs` module,
and fixes similar typos in other comments, too.

## How was the this patch tested?

manual tests.

Author: Dongjoon Hyun <dongjoon@apache.org>

Closes #11300 from dongjoon-hyun/minor_fix_typos.

1 files changed, 3 insertions, 3 deletions

diff --git a/python/pyspark/sql/functions.py b/python/pyspark/sql/functions.py
index fdae05d98c..6894c27338 100644
--- a/python/pyspark/sql/functions.py
+++ b/python/pyspark/sql/functions.py
@@ -479,7 +479,7 @@ def round(col, scale=0):
 
 @since(1.5)
 def shiftLeft(col, numBits):
-    """Shift the the given value numBits left.
+    """Shift the given value numBits left.
 
     >>> sqlContext.createDataFrame([(21,)], ['a']).select(shiftLeft('a', 1).alias('r')).collect()
     [Row(r=42)]
@@ -490,7 +490,7 @@ def shiftLeft(col, numBits):
 
 @since(1.5)
 def shiftRight(col, numBits):
-    """Shift the the given value numBits right.
+    """Shift the given value numBits right.
 
     >>> sqlContext.createDataFrame([(42,)], ['a']).select(shiftRight('a', 1).alias('r')).collect()
     [Row(r=21)]
@@ -502,7 +502,7 @@ def shiftRight(col, numBits):
 
 @since(1.5)
 def shiftRightUnsigned(col, numBits):
-    """Unsigned shift the the given value numBits right.
+    """Unsigned shift the given value numBits right.
 
     >>> df = sqlContext.createDataFrame([(-42,)], ['a'])
     >>> df.select(shiftRightUnsigned('a', 1).alias('r')).collect()