fix typos

Reference: /n/atom/patch/applied2013/runeclassupd
Date: Fri Jun 21 23:05:31 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/man/2/runeclass	Fri Jun 21 23:05:26 2013
+++ /sys/man/2/runeclass	Fri Jun 21 23:05:26 2013
@@ -1,6 +1,6 @@
 .TH RUNECLASS 2
 .SH NAME
-runeclass, runecompose. runedecompose\- Unicode character equivalence
+runeclass, runecompose, runedecompose \- Unicode character equivalence
 .SH SYNOPSIS
 .B #include <u.h>
 .br