update folder

Signed-off-by: guangli.bao <guangli.bao@daocloud.io>

Author: tukwila

src/guidellm/utils/prepare_sharegpt_data.sh renamed to contrib/sharegpt_preprocess/prepare_sharegpt_data.sh

@@ -230,11 +230,11 @@ You can use ShareGPT_V3_unfiltered_cleaned_split.json as benchmark datasets.
 Download and prepare the ShareGPT dataset; You can specify the proportion of data to process by providing a number between 0 and 1 as an argument to the script.
 
 ```bash
-  cd src/guidellm/utils && pip install -r requirements.txt && bash prepare_sharegpt_data.sh 1
+  cd contrib/sharegpt_preprocess && pip install -r requirements.txt && bash prepare_sharegpt_data.sh 1
 
 ```
 
-In this example, 1 indicates processing 100% of the dataset. You can adjust this value as needed. Conda env Recommanded to install libs.
+In this example, 1 indicates processing 100% of the dataset. You can adjust this value as needed. Conda env is Recommanded to install libs.
 
 ```bash
 guidellm benchmark \