Update unicode limits instructions for TA

Assaf Israel · Assaf Israel · commit bcd6313ab147 · 2018-12-27T17:11:57.000-08:00
diff --git a/articles/cognitive-services/text-analytics/overview.md b/articles/cognitive-services/text-analytics/overview.md
@@ -27,7 +27,7 @@ Text analysis can mean different things, but in Cognitive Services, the Text Ana
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 |[**Sentiment Analysis**](how-tos/text-analytics-how-to-sentiment-analysis.md) | Find out what customers think of your brand or topic by analyzing raw text for clues about positive or negative sentiment. This API returns a sentiment score between 0 and 1 for each document, where 1 is the most positive.<br /> The analysis models are pretrained using an extensive body of text and natural language technologies from Microsoft. For [selected languages](text-analytics-supported-languages.md), the API can analyze and score any raw text that you provide, directly returning results to the calling application. | [REST](https://westus.dev.cognitive.microsoft.com/docs/services/TextAnalytics.V2.0/operations/56f30ceeeda5650db055a3c9) <br /> [.NET](https://docs.microsoft.com/azure/cognitive-services/text-analytics/quickstarts/csharp#install-the-nuget-sdk-package)  |
 |[**Key Phrase Extraction**](how-tos/text-analytics-how-to-keyword-extraction.md) | Automatically extract key phrases to quickly identify the main points. For example, for the input text "The food was delicious and there were wonderful staff", the API returns the main talking points: "food" and "wonderful staff".  | [REST](https://westus.dev.cognitive.microsoft.com/docs/services/TextAnalytics.V2.0/operations/56f30ceeeda5650db055a3c6) <br /> [.NET](https://docs.microsoft.com/azure/cognitive-services/text-analytics/quickstarts/csharp#install-the-nuget-sdk-package) |
-|[**Language Detection**](how-tos/text-analytics-how-to-language-detection.md) | For up to 120 languages, detect which language the input text is written in and report a single language code for every document submitted on the request. The language code is paired with a score indicating the strength of the score. | [REST](https://westus.dev.cognitive.microsoft.com/docs/services/TextAnalytics.V2.0/operations/56f30ceeeda5650db055a3c7) <br />  [.NET](https://docs.microsoft.com/azure/cognitive-services/text-analytics/quickstarts/csharp#install-the-nuget-sdk-package) | 
+|[**Language Detection**](how-tos/text-analytics-how-to-language-detection.md) | For up to 120 languages, detect which language the input text is written in and report a single language code for every document submitted on the request. The language code is paired with a score indicating the strength of the score. | [REST](https://westus.dev.cognitive.microsoft.com/docs/services/TextAnalytics.V2.0/operations/56f30ceeeda5650db055a3c7) <br />  [.NET](https://docs.microsoft.com/azure/cognitive-services/text-analytics/quickstarts/csharp#install-the-nuget-sdk-package) |
 |[**Entity Recognition (Preview)**](how-tos/text-analytics-how-to-entity-linking.md) | Identify and categorize entities in your text as people, places, organizations, date/time, quantities, percentages, currencies, and more. Well-known entities are also recognized and linked to more information on the web. | [REST](https://westus.dev.cognitive.microsoft.com/docs/services/TextAnalytics-V2-1-Preview/operations/5ac4251d5b4ccd1554da7634) |
 
 ## Use containers
@@ -72,7 +72,7 @@ The rate limit is 100 calls per minute. Note that you can submit a large quantit
 
 ## Unicode encoding
 
-The Text Analytics API uses Unicode encoding for text representation and character count calculations. Requests can be submitted in both UTF-8 and UTF-16 with no measurable differences in the character count. Unicode codepoints are used as the heuristic for character length and are considered equivalent for the purposes of text analytics data limits. If you use `String.Length` to get the character count, you are using the same method we use to measure data size.
+The Text Analytics API uses Unicode encoding for text representation and character count calculations. Requests can be submitted in both UTF-8 and UTF-16 with no measurable differences in the character count. Unicode codepoints are used as the heuristic for character length and are considered equivalent for the purposes of text analytics data limits. If you use [`StringInfo.LengthInTextElements`](https://docs.microsoft.com/en-us/dotnet/api/system.globalization.stringinfo.lengthintextelements) to get the character count, you are using the same method we use to measure data size.
 
 ## Next steps
 
