Address acrolinx comments

Author: enricohuang

articles/communication-services/resources/troubleshooting/voice-video-calling/video-issues/overview.md

@@ -39,7 +39,9 @@ Additionally, CPU overload on the sender side can also influence the browser's d
 
 ## Common issues in video calls
 
-We can see that the whole process involves factors such as the sender's camera device. The network conditions at the sender and receiver ends also play an important role. Bandwidth and packets lost can  impact the video quality perceived by the users.
+We can see that the whole process involves factors such as the sender's camera device.
+The network conditions at the sender and receiver end also play an important role.
+Bandwidth and packets lost can impact the video quality perceived by the users.
 
 Here we list several common video issues, along with potential causes for each issue:
 
@@ -63,4 +65,4 @@ Here we list several common video issues, along with potential causes for each i
 * The video sender has poor network
 * The receiver has poor network
 * Heavy load on the environment of the video sender or receiver
-* The receiver subscribes multiple incoming video streams
+* The receiver subscribes multiple incoming video streams

articles/communication-services/resources/troubleshooting/voice-video-calling/video-issues/video-is-frozen.md

@@ -42,7 +42,7 @@ In this way, users can be aware of any network quality issues and aren't surpris
 
 If you expect the user's network environment to be poor, you can also use the [Video Constraint Feature](../../../../concepts/voice-video-calling/video-constraints.md) to limit the max resolution, max fps, or max bitrate sent by the sender to reduce the bandwidth required for transmitting video.
 
-Other reasons, especially those that occur on the sender side, such as the sender's camera stopped or the sender dropping the call unexpectedly,
-can't currently be known by the receiver because of the abscence of reporting mechanism from the sender to other participants.
+Other reasons, especially those occur on the sender side, such as the sender's camera stopped or the sender dropping the call unexpectedly,
+can't currently be known by the receiver due to the absence of reporting mechanism from the sender to other participants.
 In the future, when the SDK supports `Remote UFD`, the application can handle this error gracefully.