update link in README

Author: IgnacioGoldchluk

README.md

@@ -2,7 +2,7 @@
 [![License](https://img.shields.io/hexpm/l/json_path
 )](https://github.com/IgnacioGoldchluk/json_path/blob/main/LICENSE)
 [![Version](https://img.shields.io/hexpm/v/json_path.svg)](https://hex.pm/packages/json_path)
-[![Docs](https://img.shields.io/badge/documentation-gray.svg)](https://hexdocs.pm/json_path)
+[![Docs](https://img.shields.io/badge/documentation-gray.svg)](https://json-path.hexdocs.pm)
 
 # JSONPath