Adding missing description of the runtime field in router check config (#7491)
Adding missing description of the runtime field in router check config (#7491)

Signed-off-by: Jyoti Mahapatra <41a0013ab283a85d9a132447fd2518c0a2692cf9@lyft.com>
jrajahalme/envoy,istio/envoy,envoyproxy/envoy,istio/envoy,envoyproxy/envoy,eklitzke/envoy,istio/envoy,lizan/envoy,eklitzke/envoy,jrajahalme/envoy,istio/envoy,lizan/envoy,envoyproxy/envoy-wasm,lizan/envoy,envoyproxy/envoy-wasm,lyft/envoy,jrajahalme/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,eklitzke/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,lizan/envoy,istio/envoy,istio/envoy,envoyproxy/envoy-wasm,jrajahalme/envoy,eklitzke/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,jrajahalme/envoy,envoyproxy/envoy,lyft/envoy,eklitzke/envoy,lizan/envoy,envoyproxy/envoy,lizan/envoy,istio/envoy,lyft/envoy,jrajahalme/envoy,lyft/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,eklitzke/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy