docs: mark --ssl-revoke-best-effort as Schannel specific

Closes https://github.com/curl/curl/pull/11760

docs/cmdline-opts/ssl-auto-client-cert.d

@@ -8,9 +8,8 @@ Category: tls
 Example: --ssl-auto-client-cert $URL
 Multi: boolean
 ---
-Tell libcurl to automatically locate and use a client certificate for
-authentication, when requested by the server. This option is only supported
-for Schannel (the native Windows SSL library). Prior to 7.77.0 this was the
+(Schannel) Tell libcurl to automatically locate and use a client certificate
+for authentication, when requested by the server. Prior to 7.77.0 this was the
 default behavior in libcurl with Schannel. Since the server can request any
 certificate that supports client authentication in the OS certificate store it
 could be a privacy violation and unexpected.

docs/cmdline-opts/ssl-revoke-best-effort.d

@@ -1,7 +1,7 @@
 c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 SPDX-License-Identifier: curl
 Long: ssl-revoke-best-effort
-Help: Ignore missing/offline cert CRL dist points
+Help: Ignore missing/offline cert CRL dist points (Schannel)
 Added: 7.70.0
 Category: tls
 Example: --ssl-revoke-best-effort $URL

src/tool_listhelp.c

@@ -685,7 +685,7 @@ const struct helptxt helptext[] = {
    "Require SSL/TLS",
    CURLHELP_TLS},
   {"    --ssl-revoke-best-effort",
-   "Ignore missing/offline cert CRL dist points",
+   "Ignore missing/offline cert CRL dist points (Schannel)",
    CURLHELP_TLS},
   {"-2, --sslv2",
    "Use SSLv2",