Fixed some typos (#18516)

packages/flutter/lib/src/material/ink_ripple.dart

@@ -74,7 +74,7 @@ class _InkRippleFactory extends InteractiveInkFeatureFactory {
 /// This object is rarely created directly. Instead of creating an ink ripple,
 /// consider using an [InkResponse] or [InkWell] widget, which uses
 /// gestures (such as tap and long-press) to trigger ink splashes. This class
-/// is used when the [Theme]'s [ThemeData.splashType] is [InkSplashType.ripple].
+/// is used when the [Theme]'s [ThemeData.splashFactory] is [InkRipple.splashFactory].
 ///
 /// See also:
 ///

packages/flutter/lib/src/painting/text_painter.dart

@@ -391,7 +391,7 @@ class TextPainter {
     return value & 0xF800 == 0xD800;
   }
 
-  /// Returns the closest offset after `offset` at which the inout cursor can be
+  /// Returns the closest offset after `offset` at which the input cursor can be
   /// positioned.
   int getOffsetAfter(int offset) {
     final int nextCodeUnit = _text.codeUnitAt(offset);