docs: add dns category to --resolve

This commit adds the dns category to the --resolve command line option, because it can be interpreted as both: a low-level connection option and an option related to the resolving of a hostname. It is also not common for dns options to belong to the connection category and vice versa. --ipv4 and --ipv6 are both good examples.
curl · Jul 30, 2022 · f03d71a · f03d71a
1 parent 3b52a80
commit f03d71a
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diff --git a/docs/cmdline-opts/resolve.d b/docs/cmdline-opts/resolve.d
@@ -4,7 +4,7 @@ Long: resolve
 Arg: <[+]host:port:addr[,addr]...>
 Help: Resolve the host+port to this address
 Added: 7.21.3
-Category: connection
+Category: connection dns
 Example: --resolve example.com:443:127.0.0.1 $URL
 See-also: connect-to alt-svc
 ---

diff --git a/src/tool_listhelp.c b/src/tool_listhelp.c
@@ -593,7 +593,7 @@ const struct helptxt helptext[] = {
    CURLHELP_HTTP},
   {"    --resolve <[+]host:port:addr[,addr]...>",
    "Resolve the host+port to this address",
-   CURLHELP_CONNECTION},
+   CURLHELP_CONNECTION | CURLHELP_DNS},
   {"    --retry <num>",
    "Retry request if transient problems occur",
    CURLHELP_CURL},