docs: Fixed FaultDelay docs. (#17495)

Signed-off-by: Manish Kumar <manish.kumar1@india.nec.com>

Mirrored from https://github.com/envoyproxy/envoy @ cdbeb5f127443e934e7f1dfe43dff9da3e26eefb

envoy/extensions/filters/common/fault/v3/fault.proto

@@ -18,7 +18,7 @@ option (udpa.annotations.file_status).package_version_status = ACTIVE;
 // [#protodoc-title: Common fault injection types]
 
 // Delay specification is used to inject latency into the
-// HTTP/gRPC/Mongo/Redis operation or delay proxying of TCP connections.
+// HTTP/Mongo operation.
 // [#next-free-field: 6]
 message FaultDelay {
   option (udpa.annotations.versioning).previous_message_type =
@@ -46,10 +46,9 @@ message FaultDelay {
 
     // Add a fixed delay before forwarding the operation upstream. See
     // https://developers.google.com/protocol-buffers/docs/proto3#json for
-    // the JSON/YAML Duration mapping. For HTTP/Mongo/Redis, the specified
-    // delay will be injected before a new request/operation. For TCP
-    // connections, the proxying of the connection upstream will be delayed
-    // for the specified period. This is required if type is FIXED.
+    // the JSON/YAML Duration mapping. For HTTP/Mongo, the specified
+    // delay will be injected before a new request/operation.
+    // This is required if type is FIXED.
     google.protobuf.Duration fixed_delay = 3 [(validate.rules).duration = {gt {}}];
 
     // Fault delays are controlled via an HTTP header (if applicable).