update readme to use absolute paths (#157)

README.md

@@ -5,7 +5,7 @@
 [![Downloads](https://static.pepy.tech/badge/liger-kernel)](https://pepy.tech/project/liger-kernel) [![PyPI version](https://badge.fury.io/py/liger-kernel.svg)](https://badge.fury.io/py/liger-kernel) [![PyPI version](https://badge.fury.io/py/liger-kernel-nightly.svg)](https://badge.fury.io/py/liger-kernel-nightly)
 [![](https://dcbadge.vercel.app/api/server/cudamode?style=flat)](https://discord.gg/CX2YmNmn)
 
-<img src="./docs/images/logo-banner.png">
+<img src="https://raw.githubusercontent.com/linkedin/Liger-Kernel/main/docs/images/logo-banner.png">
 
 [Installation](#installation) | [Getting Started](#getting-started) | [Examples](#examples) | [APIs](#apis) | [Structure](#structure) | [Contributing](#contributing)