[PATCH 4/4] script(1): explicitly specify sh -c

The original wording is weird and doesn't explicitly say that it does
sh -c, which is the fundamental point ‒ spell it out directly
---
usr.bin/script/script.1 | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr.bin/script/script.1 b/usr.bin/script/script.1
index 28783961a..b9a0f0411 100644
--- a/usr.bin/script/script.1
+++ b/usr.bin/script/script.1
@@ -69,8 +69,8 @@ retaining the prior contents.
.It Fl c Ar command
Run
.Ar command
+.Pq via Nm sh Fl c Ar command
instead of an interactive shell.
-To run a command with arguments, enclose both in quotes.
.El
.Pp
The script ends when the forked program exits (an
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2.30.2