Change example.env to .env.exampl

Author: RedSkiesReaperr

example.env .env.exampleexample.env renamed to .env.example

@@ -26,7 +26,7 @@ This Go project aims to automate the completion of video game information in a N
 
 1. Create environment configuration file:
     ```sh
-    cp ./example.env .env
+    cp ./.env.example .env
     ```
 
 2.