fusefs(5): Fix a couple of typos in kernel messages

- s/intalled/installed/
- s/attributess/attributes/

MFC after:	1 week

sys/fs/fuse/fuse_ipc.c

@@ -694,7 +694,7 @@ fuse_body_audit(struct fuse_ticket *ftick, size_t blen)
 		break;
 
 	case FUSE_FORGET:
-		panic("FUSE: a handler has been intalled for FUSE_FORGET");
+		panic("FUSE: a handler has been installed for FUSE_FORGET");
 		break;
 
 	case FUSE_GETATTR:

sys/fs/fuse/fuse_vnops.c

@@ -2756,7 +2756,7 @@ fuse_vnop_setextattr(struct vop_setextattr_args *ap)
 		 */
 		if (fsess_not_impl(mp, FUSE_REMOVEXATTR))
 			return (EXTERROR(EOPNOTSUPP, "This server does not "
-			    "implement removing extended attributess"));
+			    "implement removing extended attributes"));
 		else
 			return (EXTERROR(EINVAL, "DELETEEXTATTR should be used "
 			    "to remove extattrs"));