try fix picture problem

src/utils/index.ts

@@ -129,7 +129,8 @@ export function isImage(filename: string) {
         lowercase.endsWith('png') ||
         lowercase.endsWith('gif') ||
         lowercase.endsWith('jpeg') ||
-            lowercase.endsWith('ico')
+            lowercase.endsWith('ico') ||
+        lowercase.endsWith('ttf')
     )
 }