Fix doc build sed err 'extra char at the end of g cmd' (#10244)
Fix doc build sed err 'extra char at the end of g cmd' (#10244)

Signed-off-by: kathan24 <a6a9035780e5501ee26a6c3ef9295628a6c7706a@lyft.com>
lizan/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,lyft/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,istio/envoy,envoyproxy/envoy,lizan/envoy,lizan/envoy,lyft/envoy,istio/envoy,envoyproxy/envoy-wasm,lizan/envoy,envoyproxy/envoy,envoyproxy/envoy,istio/envoy,istio/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,envoyproxy/envoy,istio/envoy,lizan/envoy,envoyproxy/envoy,lyft/envoy,lizan/envoy,lyft/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,envoyproxy/envoy,envoyproxy/envoy,istio/envoy,istio/envoy