updated pyspark tutorial

Author: mahmoudparsian

code/bonus_chapters/README.md

@@ -17,7 +17,7 @@ so I added the following bonus chapters online.
 | [`UDF`](./UDF/) | User-Defined Function Example  |
 | [`DataFrames`](./dataframes/) | Examples on Creation and Transformation of DataFrames |
 | [`Join operations`](./join/) | Examples on join of RDDs |
-| [`PySpark Tutorial 101`](./tutorial_101_/) | Examples on using PySpark RDDs and DataFrames |
+| [`PySpark Tutorial 101`](./pyspark_tutorial/) | Examples on using PySpark RDDs and DataFrames |
 
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