Update limits.md

Author: shshubhe

articles/cognitive-services/language-service/question-answering/concepts/limits.md

@@ -47,7 +47,7 @@ File names may not include the following characters:
 ### Maximum number of files
 
 > [!NOTE]
-> Question answering currently has no limits on the number of sources that can be added. Throughput is currently capped at 10 transactions per second for both management APIs and prediction APIs.
+> Question answering currently has no limits on the number of sources that can be added. Throughput is currently capped at 10 text records per second for both management APIs and prediction APIs.
 
 ### Maximum number of deep-links from URL
 
@@ -129,4 +129,4 @@ These represent the limits when unstructured files are used to *Create new proje
 These represent the limits when REST API is used to answer a question based without having to create a project/knowledge base:
 * Number of documents: 5
 * Maximum size of a single document:  5,120 characters
-* Maximum three responses per document.
+* Maximum three responses per document.