docs: added a note about using Yarn for installation (#2778)

* docs: added a note about yarn being faster

* docs: fixed env variable used in admin deployment guide

* docs: fixed the use of noReport with npm2yarn

docs/content/tutorial/0-set-up-your-development-environment.mdx

@@ -123,7 +123,7 @@ The final installation required to get started with Medusa is the Medusa CLI. It
 
 You can install Medusa’s CLI with the following command:
 
-```bash npm2yarn noReport
+```bash npm2yarn
 npm install @medusajs/medusa-cli -g
 ```