[example] polish diffusion readme

examples/images/diffusion/README.md

@@ -39,18 +39,16 @@ pip install transformers==4.19.2 diffusers invisible-watermark
 pip install -e .
 ```
 
-### Install Colossal-AI
+### Install [Colossal-AI v0.1.10](https://colossalai.org/download/) From Our Official Website
-
 ```
-git clone https://github.com/hpcaitech/ColossalAI.git
+pip install colossalai==0.1.10+torch1.11cu11.3 -f https://release.colossalai.org
-git checkout v0.1.10
-pip install .
 ```
 
-### Install Colossal-AI [Lightning](https://github.com/Lightning-AI/lightning)
+### Install [Lightning](https://github.com/Lightning-AI/lightning)
+We use the Sep. 2022 version with commit id as `b04a7aa`.
 ```
-git clone -b colossalai https://github.com/Fazziekey/lightning.git
+git clone https://github.com/Lightning-AI/lightning && cd lightning && git reset --hard b04a7aa
-pip install .
+pip install -r requirements.txt && pip install .
 ```
 
 ## Dataset
@@ -112,5 +110,3 @@ Thanks for open-sourcing!
   year={2022}
 }
 ```
-
-