Update cy-prompt-development.md

Author: ryanthemanuel

guides/cy-prompt-development.md

@@ -5,7 +5,7 @@ In production, the code used to facilitate the prompt command will be retrieved
 To run against locally developed `cy.prompt`:
 
 - Clone the `cypress-services` repo
-  - Run `yarn`
+  - Run `yarn && yarn all`
   - Run `yarn watch` in `app/packages/cy-prompt`
 - Set:
   - `CYPRESS_INTERNAL_ENV=<environment>` (e.g. `staging` or `production` if you want to hit those deployments of `cypress-services` or `development` if you want to hit a locally running version of `cypress-services`)
@@ -22,7 +22,7 @@ Regardless of running against local or deployed `cy.prompt`:
   - Run `yarn`
   - Run `yarn cypress:open`
   - Log In to the Cloud via the App
-  - Open a project that has `experimentalPromptCommand: true` set in the `e2e` config of the `cypress.config.js|ts` file. Ensure the project has the feature flag `cy-prompt` enabled.
+  - Open a project that has `experimentalPromptCommand: true` set in the config of the `cypress.config.js|ts` file. Ensure the project has the feature flag `cy-prompt` enabled.
 
 To run against a deployed version of `cy.prompt`: