runtime: update runtimeĀ·gogo comment in asm files

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/10244043
diff --git a/src/pkg/runtime/asm_386.s b/src/pkg/runtime/asm_386.s
index 2aa1a2d..89db413 100644
--- a/src/pkg/runtime/asm_386.s
+++ b/src/pkg/runtime/asm_386.s
@@ -141,7 +141,7 @@
 	MOVL	BX, gobuf_g(AX)
 	RET
 
-// void gogo(Gobuf*, uintptr)
+// void gogo(Gobuf*)
 // restore state from Gobuf; longjmp
 TEXT runtime·gogo(SB), 7, $0
 	MOVL	4(SP), BX		// gobuf