share topic

@@ -71,7 +71,7 @@ export default {
       this.$yoho.share({
         title: '#' + this.data.topicName,
         imgUrl: this.data.topicImageUrl,
-        link: window.location.href.split('?')[0],
+        link: `${location.origin}/grass/topic/share/${this.data.topicId}/${this.data.topicName}`,
         desc: this.data.topicDesc,
         hideType: ['7', '8', '9']
       });