add link to example implementation

examples/libp2p-host/README.md

@@ -77,4 +77,4 @@ And thats it, you have a libp2p host and you're ready to start doing some awesom
 
 In future guides we will go over ways to use hosts, configure them differently (hint: there are a huge number of ways to set these up), and interesting ways to apply this technology to various applications you might want to build.
 
-To see this code all put together, take a look at the `host.go` file in this directory.
+To see this code all put together, take a look at [host.go](host.go).