wasm: replace the obsolete contents in wasm-cc's README with docs link (#14628)
wasm: replace the obsolete contents in wasm-cc's README with docs link (#14628)

Signed-off-by: Kenjiro Nakayama <1647c3f29d26065e081626cb1b84e86d010f6b73@gmail.com>
envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy