update on readme

Author: machineily

README.md

@@ -41,7 +41,7 @@
   <a href="https://Y-Research-SBU.github.io/QuantAgent">
     <img src="https://img.shields.io/badge/Project-Website-blue?style=flat-square&logo=googlechrome" alt="Project Website">
   </a>
-  <a href="https://github.com/Y-Research-SBU/QuantAgent/blob/main/assets/wechat_0914.jpg">
+  <a href="https://github.com/Y-Research-SBU/QuantAgent/blob/main/assets/wechat_0928.png">
     <img src="https://img.shields.io/badge/WeChat-Group-green?style=flat-square&logo=wechat" alt="WeChat Group">
   </a>
   <a href="https://discord.gg/K8DqX53q">

index.html

@@ -1000,7 +1000,7 @@ <h2 class="section-header">Main Results</h2>
                     <img src="assets/table.png" alt="Performance Comparison Table" style="width: 100%; height: auto; border-radius: 8px; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);">
                 </div>
                 <div style="text-align: center; margin-top: 0rem;">
-                    <p class="figure-caption" style="font-size: 1rem; color: var(--text-secondary); line-height: 1.6; max-width: 850px; margin: 0 auto; margin-top: 0.5rem;">
+                    <p class="figure-caption" style="font-size: 1rem; color: var(--text-secondary); line-height: 1.6; max-width: 850px; margin: 0 auto; margin-top: 0.5rem; margin-bottom: 4rem;">
                         4-hour Performance comparison across assets between a random baseline, Linear Regression (LR), XGBoost and our method (highlighted in 
                         <span style="color: #66BB6A;">green</span>). 
                         Upward arrows indicate improvements on metrics where higher is better. Bold values indicate the highest (best) results for each metric.</p>
@@ -1011,7 +1011,7 @@ <h2 class="section-header">Main Results</h2>
                 </div>
                 <div style="text-align: center; margin-top: 0rem;">
                     <p class="figure-caption" style="font-size: 1rem; color: var(--text-secondary); line-height: 1.6; max-width: 850px; margin: 0 auto; margin-top: 0.5rem;">
-                        Line chart of 1-hour performance comparison in across assets between a random baseline, Linear Regression , XGBoost, and our method (shown in <span style="color: #FF0000;">red</span>).
+                        Line chart of 1-hour performance comparison across assets between a random baseline, Linear Regression , XGBoost, and our method (shown in <span style="color: #FF0000;">red</span>).
                         </p>
 
                     </div>