updated landing page with Swift and link to other sources

Author: stayseesong

src/_data/landing.yml

@@ -57,7 +57,7 @@ sections:
   section:
   - name: JavaScript
     path: /connections/sources/catalog/libraries/website/javascript/
-  - name: HTTP Tracking API
-    path: /connections/sources/catalog/libraries/server/http-api/
-  - name: iOS
-    path: /connections/sources/catalog/libraries/mobile/ios/
+  - name: Swift
+    path: /connections/sources/catalog/libraries/mobile/swift-ios/
+  - name: All other Sources
+    path: /connections/sources/catalog/