upstream: fix typo in comment (#18798)
upstream: fix typo in comment (#18798)

Signed-off-by: Dan Rosen <cd79e6963e0fec0b9501139f6e63499ce4af39a7@google.com>
envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy