Update luis-how-to-add-features.md

Author: v-albemi

articles/cognitive-services/LUIS/luis-how-to-add-features.md

@@ -1,5 +1,5 @@
 ---
-title: descriptors - LUIS
+title: Descriptors - LUIS
 titleSuffix: Azure Cognitive Services
 description: Use Language Understanding (LUIS) to add app features that can improve the detection or prediction of intents and entities that categories and patterns
 services: cognitive-services