Fixed config mistake in original package and republished as '@laststance/git-gpt-commit' for improved functionality. Also updated README with new preview gif.

Author: ryota-murakami

README.md

@@ -1,11 +1,11 @@
 > Original package doesn't work due to config mistake 'package.json'. https://github.com/nooqta/git-commit-gpt  
 > Tharefore I fix it and republish as a '@laststance/git-gpt-commit'.
 
-Git Commit GPT-3.5-turbo-instruct
------------
-An AI-powered Git extension that generates commit messages using OpenAI's GPT-3.5-turbo-instruct, streamlining the commit process and improving developer productivity.
-
-![Git GPT-Commit Demo](./assets/git-gpt-commit.gif)
+<div align="center">
+    <h1>Git Commit GPT-3.5-turbo-instruct</h1>
+    <p>An AI-powered Git extension that generates commit messages using OpenAI's GPT-3.5-turbo-instruct, streamlining the commit process and improving developer productivity.</p>
+    <img src="./assets/preview.gif" />
+</div>
 
 Installation
 ------