style(meeting-new): 期数 placeholder 改为请填写第几期

ry-vue3/src/views/manager/MeetingNew.vue

@@ -32,7 +32,7 @@
           <span class="form-value">{{ form.meetingName }}</span>
         </el-form-item>
         <el-form-item label="期数" prop="periodNo">
-          <el-input v-model="form.periodNo" placeholder="请输入期数" />
+          <el-input v-model="form.periodNo" placeholder="请填写第几期" />
         </el-form-item>
         <el-form-item label="会议开始时间" prop="startTime">
           <el-date-picker v-model="form.startTime" type="datetime" value-format="YYYY-MM-DD HH:mm:ss" placeholder="选择开始时间" />
@@ -88,7 +88,7 @@ const form = reactive({
 })
 
 const rules = {
-  periodNo: [{ required: true, message: '请输入期数', trigger: 'blur' }],
+  periodNo: [{ required: true, message: '请填写第几期', trigger: 'blur' }],
   startTime: [{ required: true, message: '请选择会议开始时间', trigger: 'change' }],
   endTime: [{ required: true, message: '请选择会议结束时间', trigger: 'change' }]
 }