Fix typos and improve readability in documentation

Author: JamesJBarnett

articles/communication-services/quickstarts/voice-video-calling/optimizing-video-placement.md

@@ -27,7 +27,7 @@ Developers need to know important details about video resolution. Resolution ref
 - 240p: 426 x 240 pixels
 - 180p: 320 x 180 pixels
 
-## Factors Influencing Video Quality
+## Factors influencing video quality
 
 Several factors influence how many videos you can effectively place on a web page. These factors include device type, resolution, bandwidth available, and user experience considerations.
 
@@ -61,7 +61,7 @@ The Web UI Library ensures consistent design standards across different projects
 
 ### Use optimal video count API
 
-The Azure Communication Services WebJS SDK introduced the [Optimal Video Count (OVC)](../../how-tos/calling-sdk/manage-video.md?pivots=platform-web) that informs applications how many incoming videos from different participants can be optimally rendered during a group call. The `optimalVideoCount` property adjusts dynamically based on **network bandwith** and **hardware capabilities**. The optimal video count returns an integer defining the ideal number of videos that can be displayed on a web page. Applications should update the number of videos rendered according to the output from OVC. Developers should ensure that their application subscribes to changes in the `Optimal Video Count` in group calls and adjust the number of videos being rendered on a web page dynamically based on the OVC count. The value from optimal video count (OVC) is updated every 10 seconds.
+The Azure Communication Services WebJS SDK introduced the [Optimal Video Count (OVC)](../../how-tos/calling-sdk/manage-video.md?pivots=platform-web) that informs applications how many incoming videos from different participants can be optimally rendered during a group call. The `optimalVideoCount` property adjusts dynamically based on **network bandwidth** and **hardware capabilities**. The optimal video count returns an integer defining the ideal number of videos that can be displayed on a web page. Applications should update the number of videos rendered according to the output from OVC. Developers should ensure that their application subscribes to changes in the `Optimal Video Count` in group calls and adjust the number of videos being rendered on a web page dynamically based on the OVC count. The value from optimal video count (OVC) is updated every 10 seconds.
 
 You need to reference the feature `OptimalVideoCount` via the feature method of the Call object. You can then set a listener via the on method of the `OptimalVideoCountCallFeature` to be notified when the `optimalVideoCount` changes. To unsubscribe from the changes, you can call the off method. The current maximum number of incoming videos that can be rendered on a web page is **16**. To properly support 16 incoming videos, the computer should have a minimum of 16-GB RAM and a 4-core or greater CPU that is no older than three years old.