Update prerequisites.md

Author: shawnmariejones

articles/cognitive-services/Speech-Service/includes/how-to/compressed-audio-input/java/prerequisites.md

@@ -71,7 +71,7 @@ APP_PLATFORM = android-21
 APP_BUILD_SCRIPT = Android.mk
 ```
 
-You can build `libgstreamer_android.so` using the following command on Ubuntu 16.04 or 18.04. The following command lines have only been tested for [Gstreamer Android version 1.14.4](https://gstreamer.freedesktop.org/data/pkg/android/1.14.4/gstreamer-1.0-android-universal-1.14.4.tar.bz2) with [Android NDK b16b.](https://dl.google.com/android/repository/android-ndk-r16b-linux-x86_64.zip)
+You can build `libgstreamer_android.so` using the following command on Ubuntu 16.04 or 18.04. The following command lines have only been tested for [GStreamer Android version 1.14.4](https://gstreamer.freedesktop.org/data/pkg/android/1.14.4/gstreamer-1.0-android-universal-1.14.4.tar.bz2) with [Android NDK b16b.](https://dl.google.com/android/repository/android-ndk-r16b-linux-x86_64.zip)
 
 ```sh
 # Assuming wget and unzip already installed on the system