header.d: add category smtp and imap

They were previously (erroneously) added manually to tool_listhelp.c
which would make them get removed again when the file is updated next
time, unless added correctly here in header.d

Follow-up to 2437fac01

Closes #9690

diff --git a/docs/cmdline-opts/header.d b/docs/cmdline-opts/header.d
index e024742130a16d8c0d6ca2241b0ddd21236911d5..d98785eb4c9e3186071999d1aedb23daac3285fe 100644 (file)
--- a/docs/cmdline-opts/header.d
+++ b/docs/cmdline-opts/header.d
@@ -5,7 +5,7 @@ Short: H
 Arg: <header/@file>
 Help: Pass custom header(s) to server
 Protocols: HTTP IMAP SMTP
-Category: http
+Category: http imap smtp
 See-also: user-agent referer
 Example: -H "X-First-Name: Joe" $URL
 Example: -H "User-Agent: yes-please/2000" $URL