Update README.md

Author: camilamaia

pokeapi/README.md

@@ -14,7 +14,7 @@ Requirements:
 ```shell
 $ git clone git@github.com:scanapi/examples.git
 $ cd pokeapi
-$ scanapi scanapi.yaml
+$ scanapi run scanapi.yaml
 ```
 
 The report will be available at `scanapi-report.html`