docs: remove spurious comment marker (#13848)

Signed-off-by: Snow Pettersen <snowp@lyft.com>

Mirrored from https://github.com/envoyproxy/envoy @ 0226d0e084d832ce24ee6303f5cb2fc01ec4970b

envoy/service/discovery/v3/discovery.proto

@@ -284,7 +284,7 @@ message Resource {
   // light-weight "heartbeat" updates to keep a resource with a TTL alive.
   //
   // The TTL feature is meant to support configurations that should be removed in the event of
-  // a management server // failure. For example, the feature may be used for fault injection
+  // a management server failure. For example, the feature may be used for fault injection
   // testing where the fault injection should be terminated in the event that Envoy loses contact
   // with the management server.
   google.protobuf.Duration ttl = 6;

envoy/service/discovery/v4alpha/discovery.proto

@@ -288,7 +288,7 @@ message Resource {
   // light-weight "heartbeat" updates to keep a resource with a TTL alive.
   //
   // The TTL feature is meant to support configurations that should be removed in the event of
-  // a management server // failure. For example, the feature may be used for fault injection
+  // a management server failure. For example, the feature may be used for fault injection
   // testing where the fault injection should be terminated in the event that Envoy loses contact
   // with the management server.
   google.protobuf.Duration ttl = 6;