Update call-api.md

Author: BaherAbdullah

articles/cognitive-services/language-service/custom-classification/how-to/call-api.md

@@ -157,13 +157,13 @@ First you will need to get your resource key and endpoint
 4. After you've installed the client library, use the following samples on GitHub to start calling the API.
 
     Single category:
-    * [C#](https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/textanalytics/Azure.AI.TextAnalytics/tests/samples/Sample10_SingleCategoryClassify.cs)
+    * [C#](https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/textanalytics/Azure.AI.TextAnalytics/samples/Sample10_SingleCategoryClassify.md)
     * [Java](https://github.com/Azure/azure-sdk-for-java/blob/main/sdk/textanalytics/azure-ai-textanalytics/src/samples/java/com/azure/ai/textanalytics/lro/ClassifyDocumentSingleCategory.java)
     * [JavaScript](https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/textanalytics/ai-text-analytics/samples/v5/javascript/customText.js)
     * [Python](https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/textanalytics/azure-ai-textanalytics/samples/sample_single_category_classify.py)
 
     Multiple category:
-    * [C#](https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/textanalytics/Azure.AI.TextAnalytics/tests/samples/Sample11_MultiCategoryClassify.cs)
+    * [C#](https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/textanalytics/Azure.AI.TextAnalytics/samples/Sample11_MultiCategoryClassify.md)
     * [Java](https://github.com/Azure/azure-sdk-for-java/blob/main/sdk/textanalytics/azure-ai-textanalytics/src/samples/java/com/azure/ai/textanalytics/lro/ClassifyDocumentMultiCategory.java)
     * [JavaScript](https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/textanalytics/ai-text-analytics/samples/v5/javascript/customText.js)
     * [Python](https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/textanalytics/azure-ai-textanalytics/samples/sample_multi_category_classify.py)