Update using.md

Acrolinx fix

Author: Jill Grant

articles/app-service/environment/using.md

@@ -49,7 +49,7 @@ When you scale an App Service plan, the needed infrastructure is added automatic
 
 A scale operation on one size and operating system won't affect scaling of the other combinations of size and operating system. For example, if you are scaling a Windows I2v2 App Service plan, a scale operation to a Windows I3v2 App Service plan starts immediately. Scaling normally takes less than 15 minutes but can take up to 45 minutes.
 
-In a multi-tenant App Service, scaling is immediate, because a pool of shared resources is readily available to support it. App Service Environment is a single-tenant service, so there's no shared buffer, and resources are allocated based on need.
+In a multitenant App Service, scaling is immediate, because a pool of shared resources is readily available to support it. App Service Environment is a single-tenant service, so there's no shared buffer, and resources are allocated based on need.
 
 ## App access