doc/man/mc.1.in: fix typo

This was missed in 76555ad (man: much use of directory macros, 2021-12-08).

Signed-off-by: Johannes Altmanninger <aclopte@gmail.com>
Signed-off-by: Yury V. Zaytsev <yury@shurup.com>

Author: krobelus

doc/man/mc.1.in

@@ -79,7 +79,7 @@ script that automatically changes the current directory of the shell to
 the last directory Midnight Commander was in. Source the file
 .B %pkglibexecdir%/mc.sh
 (bash and zsh users),
-.B %libexecdir%/mc.csh
+.B %pkglibexecdir%/mc.csh
 (tcsh users), or
 .B %pkglibexecdir%/mc.fish
 (fish users) respectively to define