Fix apidocs in _WidgetsAppState.basicLocaleListResolution (#32638)

(all tests passed, github not displaying it)

packages/flutter/lib/src/widgets/app.dart

@@ -874,11 +874,11 @@ class _WidgetsAppState extends State<WidgetsApp> implements WidgetsBindingObserv
   /// To summarize, the main matching priority is:
   ///
   ///  1. [Locale.languageCode], [Locale.scriptCode], and [Locale.countryCode]
-  ///  2. [Locale.languageCode] and [Locale.countryCode] only
+  ///  2. [Locale.languageCode] and [Locale.scriptCode] only
   ///  3. [Locale.languageCode] and [Locale.countryCode] only
   ///  4. [Locale.languageCode] only (with caveats, see above)
-  ///  6. [Locale.countryCode] only when all [preferredLocales] fail to match
-  ///  5. returns [supportedLocales.first] as a fallback
+  ///  5. [Locale.countryCode] only when all [preferredLocales] fail to match
+  ///  6. returns [supportedLocales.first] as a fallback
   ///
   /// This algorithm does not take language distance (how similar languages are to each other)
   /// into account, and will not handle edge cases such as resolving `de` to `fr` rather than `zh`