chore: add words to spell check, update readme

Author: thisissandipp

.github/cspell.json

@@ -20,6 +20,8 @@
     "localizable",
     "mostrado",
     "página",
-    "Texto"
+    "Texto",
+    "Andrea",
+    "Bizzotto",
   ]
 }

README.md

@@ -64,7 +64,7 @@ For more details on how to add strings, supported locales, and translations into
 ## Important Links 🔗
 
 - Flutter Flavors Setup with multiple Firebase Environments using FlutterFire - [Article from Andrea Bizzotto][flavours_flutterfire]
-- Gradle Error:Execution failed for task ':app:processDebugGoogleServices' - [Stackoverflow Answer][gradle_error_google_services]
+- Gradle Error:Execution failed for task ':app:processDebugGoogleServices' - [Stack Overflow Answer][gradle_error_google_services]
 - Execution failed for task ':app:checkDebugDuplicateClasses' - [Flutter GiHub Issue][debug_duplicate_classes]
 
 [coverage_badge]: coverage_badge.svg

lib/firebase_options_production.dart

@@ -72,5 +72,4 @@ class DefaultFirebaseOptions {
     storageBucket: 'sudoku-gemini.appspot.com',
     iosBundleId: 'dev.thecodexhub.sudoku',
   );
-
-}
+}