移除测试文字；

pages/frontend/skill/detail/_id.vue

@@ -5,7 +5,7 @@
                 <img class="cover" :src="skillDetail.coverImage" alt="">
                 <div class="info-wrapper">
                     <div class="title">{{ skillDetail.title }}</div>
-                    <div class="buy-num"><span>{{ skillDetail.buy_num }}人</span>已购买<span>添加几个测试的文字</span></div>
+                    <div class="buy-num"><span>{{ skillDetail.buy_num }}人</span>已购买</div>
                     <div class="price">￥{{ skillDetail.price }}</div>
                     <div class="actions" v-if="skillDetail.user.uid != userinfo.uid">
                         <el-button