Update app-service-plan-manage.md

Author: Ja-Dunn

articles/app-service/app-service-plan-manage.md

@@ -62,7 +62,7 @@ You can move an app to another App Service plan, as long as the source plan and
 4. If you create a plan, you can select the pricing tier of the new plan. In **Pricing Tier**, select the existing tier to change it. 
 
    > [!IMPORTANT]
-   > If you moving an app from a higher-tiered plan to a lower-tiered plan, such as from **D1** to **F1**, the app may lose certain capabilities in the target plan. For example, if your app uses SSL certificates, you might see this error message:
+   > If you're moving an app from a higher-tiered plan to a lower-tiered plan, such as from **D1** to **F1**, the app may lose certain capabilities in the target plan. For example, if your app uses SSL certificates, you might see this error message:
    >
    > `Cannot update the site with hostname '<app_name>' because its current SSL configuration 'SNI based SSL enabled' is not allowed in the target compute mode. Allowed SSL configuration is 'Disabled'.`