修改ai助手的头像

src/views/Student/components/DialoguePanel.vue

@@ -18,7 +18,7 @@
         <div class="dp_ml_i_message left" v-if="item.aiContent || item.loading"><!--v-if="item.aiContent || item.loading"-->
           <div class="dp_ml_i_m_avatarArea">
             <div>
-              <img src="../../../assets/img/ai_agent_header.png" alt="">
+              <img src="../../../assets/img/ai_agent_header2.png" alt="">
             </div>
           </div>
           <div class="dp_ml_i_m_msgArea">