fixed YouTube link and embed

Author: hydratim

README.md

@@ -2,9 +2,7 @@
 This repo contains everything you need to get started with building a new plugin.
 To get started all you need to do is change a few names, define some tables, and write an API Client to populate the tables.
 
-[![Mastering CloudQuery: How to build a Source Plugin in Python]          // Title
-(https://i.ytimg.com/vi/TSbGHz5Z09M/maxresdefault.jpg)] // Thumbnail
-(https://youtu.be/TSbGHz5Z09M "Mastering CloudQuery: How to build a Source Plugin in Python")    // Video Link
+[![Mastering CloudQuery: How to build a Source Plugin in Python](https://i.ytimg.com/vi/TSbGHz5Z09M/maxresdefault.jpg)](https://youtu.be/TSbGHz5Z09M "Mastering CloudQuery: How to build a Source Plugin in Python")
 
 ## Key files & classes
  - plugin/tables/items.py