text-analytics-for-health: outdated example code

[movAX13h]

I'm not sure if this is the right place to report this issue - sorry if it isn't.

This page shows invalid and outdated source code in the JavaScript example: https://learn.microsoft.com/de-de/azure/ai-services/language-service/text-analytics-for-health/quickstart?tabs=windows&pivots=programming-language-javascript

From top to bottom:

• Should be TextAnalyticsClient for the client class name.
• beginAnalyzeBatch does not exist anymore; can be replaced with beginAnalyzeHealthcareEntities(documents, 'en') thus the action const above can be removed
• modifiedOn is now lastModifiedOn