fix bug

src/pages/course/experience/experience.vue

@@ -36,7 +36,7 @@
                                 <text>学员姓名：</text>{{e.name || '-'}}
                             </view>
                             <view class="c-line">
-                                <text>性别：</text>{{e.gender || '-'}}
+                                <text>性别：</text>{{ e.gender ==0?'未知': e.gender ==1?'男':e.gender==2?'女':'-'}}
                             </view>
                             <view class="c-line">
                                 <text>联系方式：</text>{{e.mobile || '-'}}