fix: discovery mechanism examples not working (#1365)

Co-authored-by: achingbrain <alex@achingbrain.net>- fixed tests that were passing even though the example isn't working
- added timeouts to avoid infinite wait

Fixes #1229

examples/discovery-mechanisms/test-2.js

@@ -27,7 +27,7 @@ export async function test () {
     })
   })
 
-  await pWaitFor(() => discoveredNodes > 1)
+  await pWaitFor(() => discoveredNodes > 1, 600000)
 
   proc.kill()
 }