Add Python 3.10 (#405)

* Add Python 3.10

* Update content/languages/python/index.md

Co-authored-by: kazk <[email protected]>

Author: ggorlen

content/languages/python/index.md

@@ -7,8 +7,8 @@ slug: /languages/python
 
 ## Versions
 
-- 3.6
 - 3.8
+- 3.10
 
 ## Test Frameworks