Updating the max page limit of pre-built models

Updating the max page limit of pre-built models to 2000 as per the limits page.
https://docs.microsoft.com/en-us/azure/applied-ai-services/form-recognizer/service-limits?tabs=v30

Author: RohitMungi-MSFT

articles/applied-ai-services/form-recognizer/service-limits.md

@@ -24,7 +24,7 @@ For the usage with [Form Recognizer SDK](quickstarts/get-started-v3-sdk-rest-api
 | Adjustable | No | Yes<sup>2</sup> |
 | **Max document size** | 500 MB | 500 MB |
 | Adjustable | No | No |
-| **Max number of pages (Analysis)** | 2 | No limit |
+| **Max number of pages (Analysis)** | 2 | 2000 |
 | Adjustable | No | No |
 | **Max size of labels file** | 10 MB | 10 MB |
 | Adjustable | No | No |