Update README.md

updated the read me

Author: bimanmandal

code/chap08/scala/README.md

@@ -1,14 +1,14 @@
 # Chapter 8
 The program covers page rank and rank product algorithms using group by key and combine by key.
 
-* ###Page Rank:
+* ### Page Rank:
     * `org.data.algorithms.spark.ch08.PageRank` (Spark program)
     * `./run_spark_applications_scripts/page_rank.sh` (shell script to call Spark Application)
 
-* ###Rank Product using Combine By Key:
+* ### Rank Product using Combine By Key:
     * `org.data.algorithms.spark.ch08.RankProductUsingCombineByKey` (Spark program)
     * `./run_spark_applications_scripts/rank_product_using_combine_by_key.sh` (shell script to call Spark Application)
 
-* ###Rank Product using Group By Key:
+* ### Rank Product using Group By Key:
     * `org.data.algorithms.spark.ch08.RankProductUsingGroupByKey` (Spark program)
     * `./run_spark_applications_scripts/rank_product_using_group_by_key.sh` (shell script to call Spark Application)