[Docs] Update video calling app tutorial

docusaurus/docs/Unity/02-tutorials/01-video-calling.mdx

@@ -123,11 +123,16 @@ And finally, we call the `ConnectUserAsync` method that will attempt to establis
 ```csharp
 await _client.ConnectUserAsync(credentials);
 ```
-It's worth noting that we're using .NET's modern **async/await syntax** - this makes writing asynchronous code that waits for the server response very clean & concise.
 
-After the `await` completes, we should now be connected to the Stream server.
+:::note
 
-We've wrapped the asynchronous `ConnectUserAsync` method in a **try/catch** block. In case you're not familiar with handling exceptions in asynchronous methods, we advise you to always wrap awaited methods in a try/catch block to catch any thrown exceptions and therefore never miss any errors that can potentially occur during async operations.
+We're using .NET's modern async/await syntax, which makes writing asynchronous code that waits for server response very clean & concise.
+
+:::
+
+After the `await` completes, we should be connected to the Stream server.
+
+We've wrapped the asynchronous `ConnectUserAsync` method in a **try/catch** block. If you're not familiar with handling exceptions in asynchronous methods - we advise you to always wrap awaited methods in a try/catch block to catch any thrown exceptions and never miss any errors that can occur during async operations.
 
 ---
 
@@ -141,19 +146,19 @@ You should now have a game object with the `VideoManager.cs` script attached.
 
 ![GameObject with attached AudioRoomsManager.cs script](../assets/tutorials/video-calls/03.png)
 
-Once you select this game object you should see `Api Key`, `User Id`, and the `User Token` fields visible in the **Inspector** Window (Make sure the `VideoManager` game object is selected).
+Once you select the `VideoManager` game object, you should see the `Api Key`, `User Id`, and the `User Token` fields visible in the **Inspector** window.
 
 ![GameObject with attached AudioRoomsManager.cs script](../assets/tutorials/video-calls/04.png)
 
 ---
 
 ### Step 4 - Connect a user to Stream server
 
-To run this script we need a valid **User Token**. A **User Token** is typically generated by your backend service. When a user logs in to your app you authorize them and return the **user token** that allows them to join call. This way, you have full control over who can access a call. For the sake of this tutorial we'll generate a **User Token** for you:
+To run this script, we need a valid **User Token**. A **User Token** is typically generated by your backend service. When a user logs in to your app, you authorize them and return the **user token** that allows them to join the call. This way, you have complete control over who can access a call. For the sake of this tutorial, we'll generate a **User Token** for you:
 
 <TokenSnippet sampleApp='meeting' />
 
-Copy `api key`, `user id`, and the `user token` from the window above and paste them into the corresponding fields in the `VideoManager` game object:
+Copy the `api key`, `user id`, and the `user token` from the window above and paste them into the corresponding fields in the `VideoManager` game object:
 
 ![Filled Credentials](../assets/tutorials/video-calls/05.png)
 
@@ -194,7 +199,7 @@ private IStreamVideoClient _client;
 private IStreamCall _activeCall;
 ```
 
-Next, add the `JoinCallAsync` and the `LeaveCallAsync` methods to the `VideoManager` class.
+Next, add the following methods to the `VideoManager` class:
 
 ```csharp
 public async Task JoinCallAsync()