Correct the link to the Streams Spec Repo

Streams Specification is being worked on in it's own repository under WHATWG
diff --git a/doc/PROTOCOL-WEB.md b/doc/PROTOCOL-WEB.md
index 226871d..0de1083 100644
--- a/doc/PROTOCOL-WEB.md
+++ b/doc/PROTOCOL-WEB.md
@@ -29,7 +29,7 @@
 * evolve over time, mainly to optimize for browser clients or support
 web-specific features such as CORS, XSRF
 * become optional (in 1-2 years) when browsers are able to speak the native
-gRPC protocol via the new [whatwg fetch/streams API](https://github.com/whatwg/fetch)
+gRPC protocol via the new [whatwg streams API](https://github.com/whatwg/streams)
 
 # Protocol differences vs [gRPC over HTTP2](https://grpc.io/docs/guides/wire.html)