(DOCSP-25898) Update Copy on Atlas App Services PLP Cards (#96)

Author: nlarew

source/develop-applications.txt

@@ -76,13 +76,13 @@ distributed database built for application developers.
       or check the reference for various MongoDB commands.
 
    .. card::
-      :headline: MongoDB Atlas App Services
+      :headline: Atlas Application Services
       :url: https://www.mongodb.com/docs/atlas/app-services/
       :icon: /images/icons/realm.svg
       :icon-alt: Realm LogoMark
 
-      Discover the mobile database & tools to build serverless apps, sync
-      across devices, and authenticate users.
+      Build fully-managed apps with serverless functions, instant APIs,
+      realtime sync, and more.
 
    .. card::
       :headline: MongoDB Analyzer

source/index.txt

@@ -83,13 +83,14 @@ Welcome to the MongoDB Documentation
       Create charts and live dashboards to reveal data trends.
 
    .. card::
-      :headline: Build a mobile app
+      :headline: Build apps on MongoDB Atlas
       :cta: Get started with Atlas App Services
       :url: https://docs.mongodb.com/atlas/app-services
       :icon: /images/icons/realm.svg
       :icon-alt: MongoDB Realm icon
 
-      Build cross-platform apps with local persistence and backend sync.
+      Build fully-managed apps with serverless functions, instant APIs,
+      realtime sync, and more.
 
 Learn through examples and best practices
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