updated docs...

Author: mahmoudparsian

README.md

@@ -2,9 +2,9 @@
 
 ## Unlock the Power of Big Data by PySpark Algorithms book
 
-## [PySpark Algorithms Book → PDF Version (.pdf)](https://www.amazon.com/PySpark-Algorithms-Mahmoud-Parsian-ebook/dp/B07WQHTVCJ/)
+## [Buy PySpark Algorithms Book → PDF Version (.pdf)](https://www.amazon.com/PySpark-Algorithms-Mahmoud-Parsian-ebook/dp/B07WQHTVCJ/)
 
-## [PySpark Algorithms Book → Kindle Version (.kpf)](https://www.amazon.com/dp/B07X4B2218/ref=sr_1_2)
+## [Buy PySpark Algorithms Book → Kindle Version (.kpf)](https://www.amazon.com/dp/B07X4B2218/ref=sr_1_2)
 
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