docs: update contributing

Author: ije

CONTRIBUTING.md

@@ -22,13 +22,13 @@ You will need [Deno](https://deno.land/) 1.7+.
 
 ```bash
 # ssr/development with HMR
-ALEPH_DEV_PORT=2020 deno run -A --unstable cli.ts dev ./examples/hello-world -L debug
+ALEPH_DEV_PORT=2020 deno run -A --unstable --location=http://localhost dev ./examples/hello-world -L debug
 
 # ssr/production
-ALEPH_DEV_PORT=2020 deno run -A --unstable cli.ts start ./examples/hello-world -L debug
+ALEPH_DEV_PORT=2020 deno run -A --unstable --location=http://localhost start ./examples/hello-world -L debug
 
 # ssg
-ALEPH_DEV_PORT=2020 deno run -A --unstable cli.ts build ./examples/hello-world -L debug
+ALEPH_DEV_PORT=2020 deno run -A --unstable --location=http://localhost build ./examples/hello-world -L debug
 
 # run all tests
 deno test -A --unstable --location=https://deno.land/x/aleph