Typo `always_specify_types` lint

Closes https://github.com/dart-lang/sdk/pull/54992

GitOrigin-RevId: c0a791d05ad0aee995aa593ed193ac299d5159ad
Change-Id: I46223abb1a6084a2ba14b79a28afdf2c2d314d64
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/353807
Commit-Queue: Kevin Moore <kevmoo@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Kevin Moore <kevmoo@google.com>
diff --git a/pkg/linter/lib/src/rules/always_specify_types.dart b/pkg/linter/lib/src/rules/always_specify_types.dart
index ef8a2b5..3cf9821 100644
--- a/pkg/linter/lib/src/rules/always_specify_types.dart
+++ b/pkg/linter/lib/src/rules/always_specify_types.dart
@@ -40,7 +40,7 @@
 ```
 
 NOTE: Using the the `@optionalTypeArgs` annotation in the `meta` package, API
-authors can special-case type variables whose type needs to by dynamic but whose
+authors can special-case type variables whose type needs to be dynamic but whose
 declaration should be treated as optional.  For example, suppose you have a
 `Key` object whose type parameter you'd like to treat as optional.  Using the
 `@optionalTypeArgs` would look like this: