link to OM sample in sentiment analysis example

sdk/textanalytics/azure-ai-textanalytics/README.md

@@ -221,7 +221,7 @@ for doc in result:
 
 The returned response is a heterogeneous list of result and error objects: list[[AnalyzeSentimentResult][analyze_sentiment_result], [DocumentError][document_error]]
 
-Please refer to the service documentation for a conceptual discussion of [sentiment analysis][sentiment_analysis].
+Please refer to the service documentation for a conceptual discussion of [sentiment analysis][sentiment_analysis]. To see how to conduct more granular analysis into the opinions related to individual aspects (such as attributes of a product or service) in a text, see [here][opinion_mining_sample].
 
 ### Recognize entities
 [recognize_entities][recognize_entities] recognizes and categories entities in its input text as people, places, organizations, date/time, quantities, percentages, currencies, and more.