edit pub eval readme

PUBLIC_EVALUATION_GUIDELINE.md

@@ -8,6 +8,7 @@ We have built an AWS-based platform for large-scale parallel evaluation of OSWor
 
 All instances use a preconfigured AMI to ensure a consistent environment.
 
+<br><br>
 
 ## 1. Platform Deployment & Connection
 
@@ -89,6 +90,8 @@ In the **Access keys** section, click **"Create access key"** to generate your o
   <img src="./assets/pubeval5.png" alt="pubeval5" style="width: 80%;" />
 </p>
 
+<br><br>
+
 ## 2. Environment Setup
 
 ### 2.1 Google Drive Integration
@@ -128,6 +131,7 @@ export AWS_SUBNET_ID="subnet-0a4b0c5b8f6066712"
 export AWS_SECURITY_GROUP_ID="sg-08a53433e9b4abde6"
 ```
 
+<br><br>
 
 ## 3. Running Evaluations
 
@@ -155,6 +159,7 @@ Key Parameters:
 - `--test_all_meta_path`: Path to the test set metadata
 - `--region`: AWS region
 
+<br><br>
 
 ## 4. Viewing Results