fix: C端数字史馆弹幕提示语

web/src/components/Danmaku.vue

@@ -17,7 +17,7 @@
       </transition-group>
     </div>
     <div class="input-container" v-if="!isMobile">
-        <input @click.stop="toggleSelectMenu" v-model="danmu" type="text" placeholder="请选择弹幕内发送吧~" class="send-choices">
+        <input @click.stop="toggleSelectMenu" v-model="danmu" type="text" placeholder="请选择弹幕内容发送吧~" class="send-choices">
       <div class="send-btn-container">
         <img
           @click="hideList"
@@ -45,7 +45,7 @@
       </ul>
     </div>
     <div class="input-mobile" v-else>
-      <span class="send-choices" @click.stop="toggleSelectMenu">请选择弹幕内发送吧~</span>
+      <span class="send-choices" @click.stop="toggleSelectMenu">请选择弹幕内容发送吧~</span>
       <div class="send-btn-container">
         <img
           @click="hideList"