--help: move two options from the misc category

The cmdline opts delegation and suppress-connect-headers
fit better into auth and proxy rather than misc.

Follow-up to aa8777f63f
Closes #6038

docs/cmdline-opts/delegation.d

@@ -2,7 +2,7 @@ Long: delegation
 Arg: <LEVEL>
 Help: GSS-API delegation permission
 Protocols: GSS/kerberos
-Category: misc
+Category: auth
 ---
 Set LEVEL to tell the server what it is allowed to delegate when it
 comes to user credentials.

docs/cmdline-opts/suppress-connect-headers.d

@@ -1,7 +1,7 @@
 Long: suppress-connect-headers
 Help: Suppress proxy CONNECT response headers
 See-also: dump-header include proxytunnel
-Category: misc
+Category: proxy
 ---
 When --proxytunnel is used and a CONNECT request is made don't output proxy
 CONNECT response headers. This option is meant to be used with --dump-header or

src/tool_help.c

@@ -207,7 +207,7 @@ static const struct helptxt helptext[] = {
    CURLHELP_HTTP | CURLHELP_POST | CURLHELP_UPLOAD},
   {"    --delegation <LEVEL>",
    "GSS-API delegation permission",
-   CURLHELP_MISC},
+   CURLHELP_AUTH},
   {"    --digest",
    "Use HTTP Digest Authentication",
    CURLHELP_PROXY | CURLHELP_AUTH | CURLHELP_HTTP},
@@ -732,7 +732,7 @@ static const struct helptxt helptext[] = {
    CURLHELP_VERBOSE},
   {"    --suppress-connect-headers",
    "Suppress proxy CONNECT response headers",
-   CURLHELP_MISC},
+   CURLHELP_PROXY},
   {"    --tcp-fastopen",
    "Use TCP Fast Open",
    CURLHELP_CONNECTION},