Update README.md

Author: vgvoleg

README.md

@@ -12,7 +12,7 @@ Officially supported Python client for YDB.
 
 **Documentation**: <a href="https://ydb-platform.github.io/ydb-python-sdk" target="_blank">https://ydb-platform.github.io/ydb-python-sdk</a>
 
----
+---1
 
 ## Quickstart