修改图片路径

Change-Id: I5d4c35c3a8ecfdca7022354d3e492db2722a0882
diff --git a/src/pages/PublishSeed/PublishSeed.jsx b/src/pages/PublishSeed/PublishSeed.jsx
index 7287e82..f064265 100644
--- a/src/pages/PublishSeed/PublishSeed.jsx
+++ b/src/pages/PublishSeed/PublishSeed.jsx
@@ -90,7 +90,7 @@
     formData.append('uploader', user.userId);
 
     if (imageFile) {
-      formData.append('image_url', imageFile);
+      formData.append('coverImage', imageFile);
     }
 
     try {