Fix indent events-web.md

Author: kevinlg-mstdl

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

@@ -61,16 +61,16 @@ Your application should notify the user of the incoming call. The notification p
 **Code sample:**
 ```javascript
 callClient.on('incomingCall', (async (incomimgCallEvent) => {
-        try {
-          // Store a reference to the call object
-          incomingCall = incomimgCallEvent.incomingCall; 
-          // Update your UI to allow
-          acceptCallButton.disabled = false; 
-          callButton.disabled = true;
-        } catch (error) {
-          console.error(error);
-        }
-      });
+    try {
+        // Store a reference to the call object
+        incomingCall = incomimgCallEvent.incomingCall; 
+        // Update your UI to allow
+        acceptCallButton.disabled = false; 
+        callButton.disabled = true;
+    } catch (error) {
+        console.error(error);
+    }
+});
 ```
 
 #### Event Name: `callsUpdated`