docs: remove incorrect information concerning haproxy's capabilities (#360)
docs: remove incorrect information concerning haproxy's capabilities (#360)

Signed-off-by: Jose Diaz-Gonzalez <a88b7dcd1a9e3e17770bbaa6d7515b31a2d7e85d@josediazgonzalez.com>
jrajahalme/envoy-api,jrajahalme/envoy-api,lyft/envoy-api,lyft/envoy-api,jrajahalme/envoy-api,lyft/envoy-api,jrajahalme/envoy-api