fix links

Author: PatrickFarley

articles/cognitive-services/Custom-Vision-Service/index.yml

@@ -98,7 +98,7 @@ landingContent:
       - linkListType: tutorial
         links:
           - text: IoT Visual Alert app
-            url: iot-visual-alert-tutorial.md
+            url: iot-visual-alerts-tutorial.md
           - text: Logo detector for mobile
             url: logo-detector-mobile.md
 

articles/cognitive-services/Custom-Vision-Service/toc.yml

@@ -47,7 +47,7 @@
   - name: Logo detector for mobile
     href: logo-detector-mobile.md
   - name: IoT Visual Alert app
-    href: iot-visual-alert-tutorial.md
+    href: iot-visual-alerts-tutorial.md
 - name: How-to guides
   items:
   - name: Test your model