fix: change style for showing file size

src/app/shared/utils/file.util.ts

@@ -4,19 +4,19 @@ export class FileUtil {
     let newSize: number;
     if (size < 1024) {
       newSize = size;
-      extension = "B";
+      extension = " B";
     } else if (size < 1048576) {
       newSize = size / 1024;
-      extension = "KB";
+      extension = " KB";
     } else if (size < 1073741824) {
       newSize = size / 1048576;
-      extension = "MB";
+      extension = " MB";
     } else if (size < 1099511627776) {
       newSize = size / 1.073741824;
-      extension = "GB";
+      extension = " GB";
     } else {
       newSize = size / 1.099511627776;
-      extension = "TB";
+      extension = " TB";
     }
     return newSize.toFixed(2) + extension;
   }