Fix typo

src/docs/environment/index.mdx

@@ -72,7 +72,7 @@ In the above setup your local environment will use org slug domains, and send re
 
 ### Ngrok and siloed servers
 
-To combine ngrok and local development servers you’ll need to reserve multipe domains in ngrok, and create a configuration file for ngrok:
+To combine ngrok and local development servers you’ll need to reserve multiple domains in ngrok, and create a configuration file for ngrok:
 
 ```yaml
 version: '2'