Update media-streaming.md

Line 2: Change title value to sentence case. Lowercase "streaming" (unless "Media Streaming" is a proper noun, eg product name). Lowercase "quickstart".

Author: valindrae

articles/communication-services/quickstarts/voice-video-calling/media-streaming.md

@@ -1,5 +1,5 @@
 ---
-title: Media Streaming Quickstart
+title: Media streaming quickstart
 titleSuffix: An Azure Communication Services quickstart document
 description: Provides a quick start for developers to get audio streams through media streaming APIs from ACS calls.
 author: kunaal