netfs: Fix proc/fs/fscache symlink to point to "netfs" not "../netfs"

Fix the proc/fs/fscache symlink to point to "netfs" not "../netfs".
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: Christian Brauner <christian@brauner.io>
cc: linux-fsdevel@vger.kernel.org
cc: linux-cachefs@redhat.com

fs/netfs/fscache_proc.c

@@ -16,7 +16,7 @@
  */
 int __init fscache_proc_init(void)
 {
-	if (!proc_symlink("fs/fscache", NULL, "../netfs"))
+	if (!proc_symlink("fs/fscache", NULL, "netfs"))
 		goto error_sym;
 
 	if (!proc_create_seq("fs/netfs/caches", S_IFREG | 0444, NULL,