Update README.md

Author: sparkcodegeeks1

README.md

@@ -47,15 +47,14 @@ Explanation of all Spark SQL, RDD, DataFrame and Dataset examples present on thi
   - [Spark explode array and map columns to rows](https://sparkbyexamples.com/spark/explode-spark-array-and-map-dataframe-column/)
 
 
-  ## Spark SQL Functions
-  
-    - [Spark SQL String Functions Explained](https://sparkbyexamples.com/spark/usage-of-spark-sql-string-functions/)
-    - [Spark SQL Date and Time Functions](https://sparkbyexamples.com/spark/spark-sql-date-and-time-functions/)
-    - [Spark SQL Array functions complete list](https://sparkbyexamples.com/spark/spark-sql-array-functions/)
-    - [Spark SQL Map functions – complete list](https://sparkbyexamples.com/spark/spark-sql-map-functions/)
-    - [Spark SQL Sort functions – complete list](https://sparkbyexamples.com/spark/spark-sql-sort-functions/)
-    - [Spark SQL Aggregate Functions](https://sparkbyexamples.com/spark/spark-sql-aggregate-functions/)
-    - [Spark Window Functions with Examples](https://sparkbyexamples.com/spark/spark-sql-window-functions/)
+   ## Spark SQL Functions
+  - [Spark SQL String Functions Explained](https://sparkbyexamples.com/spark/usage-of-spark-sql-string-functions/)
+  - [Spark SQL Date and Time Functions](https://sparkbyexamples.com/spark/spark-sql-date-and-time-functions/)
+  - [Spark SQL Array functions complete list](https://sparkbyexamples.com/spark/spark-sql-array-functions/)
+  - [Spark SQL Map functions – complete list](https://sparkbyexamples.com/spark/spark-sql-map-functions/)
+  - [Spark SQL Sort functions – complete list](https://sparkbyexamples.com/spark/spark-sql-sort-functions/)
+  - [Spark SQL Aggregate Functions](https://sparkbyexamples.com/spark/spark-sql-aggregate-functions/)
+  - [Spark Window Functions with Examples](https://sparkbyexamples.com/spark/spark-sql-window-functions/)
 
     ## Spark Data Source API