Remove unneeded `return` (#950)

add_to_app/books/README.md

@@ -2,7 +2,7 @@
 
 Mimics a real world use-case of embedding Flutter into an existing Android app
 and demonstrates using [Pigeon](https://pub.dev/packages/pigeon) to communicate
-between Fluter and the host application.
+between Flutter and the host application.
 
 ## Description
 

add_to_app/books/flutter_module_books/lib/api.dart

@@ -165,8 +165,6 @@ class HostBookApi {
         message: error['message'] as String?,
         details: error['details'],
       );
-    } else {
-      return;
     }
   }
 
@@ -190,8 +188,6 @@ class HostBookApi {
         message: error['message'] as String?,
         details: error['details'],
       );
-    } else {
-      return;
     }
   }
 }

place_tracker/lib/stub_data.dart

@@ -147,7 +147,7 @@ class StubData {
 
   static const reviewStrings = <String>[
     'My favorite place in Portland. The employees are wonderful and so is the food. I go here at least once a month!',
-    'Staff was very friendly. Great atmosphere and good music. Would reccommend.',
+    'Staff was very friendly. Great atmosphere and good music. Would recommend.',
     'Best. Place. In. Town. Period.'
   ];
 }