(AzureCXP) fixes MicrosoftDocs/azure-docs#120860

Correcting the sample code in Handle changed states section with below :
raiseHandFeature.on('raisedHandEvent', raisedHandChangedHandler);
raiseHandFeature.on('loweredHandEvent', loweredHandChangedHandler):

instead of  : 

raiseHandFeature.on('raisedHandChanged', raisedHandChangedHandler):
raiseHandFeature.on('loweredHandChanged', loweredHandChangedHandler):

Based on these sdk reference documents for capturing hand change event types :
1. [RaisedHandEventType](https://learn.microsoft.com/en-us/javascript/api/azure-communication-services/@azure/communication-calling/raisedhandeventtype?view=azure-communication-services-js)
2. [LoweredHandEventType type](https://learn.microsoft.com/en-us/javascript/api/azure-communication-services/@azure/communication-calling/loweredhandeventtype?view=azure-communication-services-js)

Author: Venkateshdodda-MSFT

articles/communication-services/how-tos/calling-sdk/includes/raise-hand/raise-hand-web.md

@@ -60,8 +60,8 @@ const raisedHandChangedHandler = (event) => {
 const loweredHandChangedHandler = (event) => {
     console.log(`Participant ${event.identifier} lowered hand`);
 };
-raiseHandFeature.on('raisedHandChanged', raisedHandChangedHandler):
-raiseHandFeature.on('loweredHandChanged', loweredHandChangedHandler):
+raiseHandFeature.on('raisedHandEvent', raisedHandChangedHandler):
+raiseHandFeature.on('loweredHandEvent', loweredHandChangedHandler):
 ```
 The `raisedHandChanged` and `loweredHandChanged` events contain an object with the `identifier` property, which represents the participant's communication identifier. In the example above, we log a message to the console indicating that a participant has raised their hand.
 
@@ -79,4 +79,4 @@ let participantsWithRaisedHands = raiseHandFeature.getRaisedHands();
 The `participantsWithRaisedHands` variable will contain an array of participant objects, where each object has the following properties:
 `identifier`: the communication identifier of the participant
 `order`: the order in which the participant raised their hand
-You can use this information to display a list of participants with the Raise Hand state and their order in the queue.
+You can use this information to display a list of participants with the Raise Hand state and their order in the queue.