doc: fix missing backtick in fs.md

PR-URL: #38260
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Nitzan Uziely <linkgoron@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>

doc/api/fs.md

@@ -2481,7 +2481,7 @@ changes:
   * `stats` {fs.Stats}
 
 Retrieves the {fs.Stats} for the symbolic link referred to by the path.
-The callback gets two arguments `(err, stats)` where `stats` is a {`fs.Stats}
+The callback gets two arguments `(err, stats)` where `stats` is a {fs.Stats}
 object. `lstat()` is identical to `stat()`, except that if `path` is a symbolic
 link, then the link itself is stat-ed, not the file that it refers to.