docs: QUIC GA (#19422)

Risk Level: n/a
Testing: n/a
Docs Changes: yes
Release Notes: yes

Signed-off-by: Alyssa Wilk <alyssar@chromium.org>

Mirrored from https://github.com/envoyproxy/envoy @ d73eafdddf6afff49e84993acf3326c6668274e4

envoy/config/listener/v3/udp_listener_config.proto

@@ -34,10 +34,6 @@ message UdpListenerConfig {
 
   // Configuration for QUIC protocol. If empty, QUIC will not be enabled on this listener. Set
   // to the default object to enable QUIC without modifying any additional options.
-  //
-  // .. warning::
-  //   QUIC support is currently alpha and should be used with caution. Please
-  //   see :ref:`here <arch_overview_http3>` for details.
   QuicProtocolOptions quic_options = 7;
 }
 

envoy/extensions/upstreams/http/v3/http_protocol_options.proto

@@ -70,8 +70,8 @@ message HttpProtocolOptions {
       config.core.v3.Http2ProtocolOptions http2_protocol_options = 2;
 
       // .. warning::
-      //   QUIC support is currently alpha and should be used with caution. Please
-      //   see :ref:`here <arch_overview_http3>` for details.
+      //   QUIC upstream support is currently not ready for internet use.
+      //   Please see :ref:`here <arch_overview_http3>` for details.
       config.core.v3.Http3ProtocolOptions http3_protocol_options = 3;
     }
   }
@@ -87,8 +87,8 @@ message HttpProtocolOptions {
     config.core.v3.Http2ProtocolOptions http2_protocol_options = 2;
 
     // .. warning::
-    //   QUIC support is currently alpha and should be used with caution. Please
-    //   see :ref:`here <arch_overview_http3>` for details.
+    //   QUIC upstream support is currently not ready for internet use.
+    //   Please see :ref:`here <arch_overview_http3>` for details.
     config.core.v3.Http3ProtocolOptions http3_protocol_options = 3;
   }
 
@@ -113,10 +113,8 @@ message HttpProtocolOptions {
     // when HTTP/3 will be used, and when Envoy will fail over to TCP.
     //
     // .. warning::
-    //   QUIC support is currently alpha and should be used with caution. Please
-    //   see :ref:`here <arch_overview_http3>` for details.
-    //   AutoHttpConfig config is undergoing especially rapid change and as it
-    //   is alpha is not guaranteed to be API-stable.
+    //   QUIC upstream support is currently not ready for internet use.
+    //   Please see :ref:`here <arch_overview_http3>` for details.
     config.core.v3.Http3ProtocolOptions http3_protocol_options = 3;
 
     // The presence of alternate protocols cache options causes the use of the