Fix incorrectly quoted translation (go-gitea#24514)

Looks like crowdin cannot recognize a value starting with a double quote but
not end with a double quote.

Author: lunny

options/locale/locale_en-US.ini

@@ -1181,7 +1181,7 @@ editor.filename_is_invalid = The filename is invalid: "%s".
 editor.branch_does_not_exist = Branch "%s" does not exist in this repository.
 editor.branch_already_exists = Branch "%s" already exists in this repository.
 editor.directory_is_a_file = Directory name "%s" is already used as a filename in this repository.
-editor.file_is_a_symlink = "%s" is a symbolic link. Symbolic links cannot be edited in the web editor
+editor.file_is_a_symlink = `"%s" is a symbolic link. Symbolic links cannot be edited in the web editor`
 editor.filename_is_a_directory = Filename "%s" is already used as a directory name in this repository.
 editor.file_editing_no_longer_exists = The file being edited, "%s", no longer exists in this repository.
 editor.file_deleting_no_longer_exists = The file being deleted, "%s", no longer exists in this repository.