CHANRECV -> CHANRCV

Reference: /n/sources/patch/applied/doc-man-2-thread-chanrecv
Date: Mon May 23 00:52:35 CES 2005

--- /sys/man/2/thread	Mon May 23 00:52:22 2005
+++ /sys/man/2/thread	Mon May 23 00:52:17 2005
@@ -460,7 +460,7 @@
 the operation:
 .B CHANSND
 for a send operation,
-.B CHANRECV
+.B CHANRCV
 for a recv operation;
 .B CHANNOP
 for no operation