docs: Edits to Instant Apps FAQs, index page.

Bug: 29571621
Change-Id: Ia0eca7d56f1282f9038b29ef2d0f8a3dfd796629

docs/html/topic/instant-apps/faqs.jd

@@ -46,10 +46,7 @@ forcelocalnav=true
   <strong>How do permissions work in Android Instant Apps?</strong>
   <br/>
   Android Instant Apps uses the runtime permissions model introduced in
-  Android 6.0.
-  If an app supports the permission model introduced in Android 6.0
-  (API level 23), it does not require any additional work to become an Instant
-  App that runs on older devices.
+  Android 6.0 (API level 23).
 </p>
 
 <p>

docs/html/topic/instant-apps/index.jd

@@ -81,7 +81,7 @@ excludeFromSuggestions=true
     Get people to your flagship Android experience from links that would
     otherwise open your mobile web page — like
     search, social media, messaging, and other deep links — without them
-    needing to stop and install your app first.
+    needing to install your app first.
   </p>
 
   <div class="cols" style="margin-top:1em;">