doc: env: fix man page reference of exec(2) to exec(3p)

* man/env.x: Change exec() reference from section 2 to 3p.

diff --git a/man/env.x b/man/env.x
index c2cafbaa80f73b46aa3d152bb46876a532ee98cb..6dcbba57ab2ce46257bc291c9901bba9276b8c29 100644 (file)
--- a/man/env.x
+++ b/man/env.x
@@ -54,7 +54,7 @@ sh \-c 'env \-\-default-signal=PIPE seq inf | head \-n1'
 .PP
 
 [NOTES]
-POSIX's exec(2) pages says:
+POSIX's exec(3p) pages says:
 .RS
 "many existing applications wrongly assume that they start with certain
 signals set to the default action and/or unblocked.... Therefore, it is best