Generate test crash wiki out of date

[mannix]

On this wiki page:
https://github.com/Microsoft/ApplicationInsights-iOS/wiki/How-to-Generate-a-Test-Crash

The code snippet for triggering a crash is out of date. Instead of:

[[[MSAIApplicationInsights sharedInstance] crashManager] generateTestCrash];

It should be*

[[MSAICrashManager sharedManager] generateTestCrash];

* I haven't actually tested this in objc. I'm writing mine in Swift and this worked for me:

MSAICrashManager.sharedManager().generateTestCrash()

[lumaxis]

You're absolutely right. Fixed, thanks! 👍