Style and spelling tweaks

Author: Mattp123

powerapps-docs/maker/model-driven-apps/performance-tracking.md

@@ -1,6 +1,6 @@
 ---
 title: Performance tracking in model-driven apps | Microsoft Docs
-description: Learn how terformance is tracked in model-driven apps
+description: Learn how performance is tracked in model-driven apps
 documentationcenter: ''
 author: JesseParsons
 ms.reviewer: matp
@@ -16,11 +16,11 @@ search.app:
   - D365CE
 ---
 
-# Performance tracking in model-driven apps
+# Tracking performance in model-driven apps
 
-Model-driven apps use a custom performance tracking library to measure user actions.  The measurements can be tracked by makers using the [Monitor tool](https://powerapps.microsoft.com/en-us/blog/monitor-now-supports-model-driven-apps/).
+Model-driven apps use a custom performance tracking library to measure user actions. The measurements can be tracked by makers using the [Monitor tool](https://powerapps.microsoft.com/en-us/blog/monitor-now-supports-model-driven-apps/).
 
 ## Page KPI's
-The performance tracking library creates KPI's (key performance indicators) for each user action.  User actions include:
-- Page navigations (e.g. edit forms, grids, dashboards)
-- Command executions
+The performance tracking library creates key performance indicators (KPI's) for each user action. User actions include:
+- Page navigations, such as edit forms, grids, and dashboards. 
+- Command executions.