doc: update readme

Je · Je · commit f84114f02ceb · 2020-10-13T17:27:13.000+08:00
diff --git a/README.md b/README.md
@@ -37,7 +37,7 @@ aleph init hello
 cd hello
 
 # start the app in `development` mode
-aleph
+aleph dev
 
 # start the app in `production` mode
 aleph start
