Web: Fixed the download and preview file not authorized. (#3652)

https://github.com/infiniflow/ragflow/issues/3651

### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/knowledge/knowledge-card/index.less

@@ -27,7 +27,7 @@
   .titleWrapper {
     margin: 16px 0;
     overflow: hidden;
-    
+
     .title {
       display: -webkit-box;
       -webkit-line-clamp: 2;
@@ -39,8 +39,8 @@
       color: rgba(0, 0, 0, 0.88);
       word-break: break-all;
     }
-    
-    .description{
+
+    .description {
       margin-top: 4px;
       display: -webkit-box;
       -webkit-line-clamp: 3;