Fix doc comments typos (#6499)

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

@@ -17,14 +17,14 @@ class FractionalOffset {
 
   /// The distance fraction in the horizontal direction.
   ///
-  /// A value of 0.0 cooresponds to the leftmost edge. A value of 1.0
-  /// cooresponds to the rightmost edge.
+  /// A value of 0.0 corresponds to the leftmost edge. A value of 1.0
+  /// corresponds to the rightmost edge.
   final double dx;
 
   /// The distance fraction in the vertical direction.
   ///
-  /// A value of 0.0 cooresponds to the topmost edge. A value of 1.0
-  /// cooresponds to the bottommost edge.
+  /// A value of 0.0 corresponds to the topmost edge. A value of 1.0
+  /// corresponds to the bottommost edge.
   final double dy;
 
   /// The top left corner.

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

@@ -34,7 +34,7 @@ class TextStyle {
   /// The name of the font to use when painting the text (e.g., Roboto).
   final String fontFamily;
 
-  /// The size of gyphs (in logical pixels) to use when painting the text.
+  /// The size of glyphs (in logical pixels) to use when painting the text.
   ///
   /// During painting, the [fontSize] is multiplied by the current
   /// `textScaleFactor` to let users make it easier to read text by increasing
@@ -120,7 +120,7 @@ class TextStyle {
   /// If the underlying values are null, then the corresponding factors and/or
   /// deltas must not be specified.
   ///
-  /// The non-numeric fields can be controlled using the cooresponding arguments.
+  /// The non-numeric fields can be controlled using the corresponding arguments.
   TextStyle apply({
     Color color,
     String fontFamily,

packages/flutter/lib/src/rendering/semantics.dart

@@ -288,7 +288,7 @@ class SemanticsNode extends AbstractNode {
   bool get hasCheckedState => (_flags & SemanticsFlags.hasCheckedState.index) != 0;
   set hasCheckedState(bool value) => _setFlag(SemanticsFlags.hasCheckedState, value);
 
-  /// If this node has Boolean state that can be controlled by the user, whether that state is on or off, cooresponding to `true` and `false`, respectively.
+  /// If this node has Boolean state that can be controlled by the user, whether that state is on or off, corresponding to `true` and `false`, respectively.
   bool get isChecked => (_flags & SemanticsFlags.isChecked.index) != 0;
   set isChecked(bool value) => _setFlag(SemanticsFlags.isChecked, value);
 

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

@@ -30,7 +30,7 @@ enum PageableListFlingBehavior {
 /// a value that shows a single page.
 ///
 /// [Pageable] uses different units for its scroll offset than [Scrollable]. One
-/// unit of scroll offset cooresponds to one child widget, which means a scroll
+/// unit of scroll offset corresponds to one child widget, which means a scroll
 /// offset of 2.75 indicates that the viewport is three quarters of the way
 /// between the child with index 2 and the child with index 3.
 ///
@@ -526,7 +526,7 @@ class _VirtualPageViewportElement extends VirtualViewportElement {
 ///
 /// Useful for [Pageable] widgets.
 ///
-/// One unit of start offset cooresponds to one child widget, which means a
+/// One unit of start offset corresponds to one child widget, which means a
 /// start offset of 2.75 indicates that the viewport is three quarters of the
 /// way between the child with index 2 and the child with index 3.
 ///
@@ -558,7 +558,7 @@ class PageViewport extends _VirtualPageViewport with VirtualViewportFromIterable
 ///
 /// Useful for [Pageable] widgets.
 ///
-/// One unit of start offset cooresponds to one child widget, which means a
+/// One unit of start offset corresponds to one child widget, which means a
 /// start offset of 2.75 indicates that the viewport is three quarters of the
 /// way between the child with index 2 and the child with index 3.
 ///

packages/flutter_tools/lib/src/android/android_sdk.dart

@@ -153,7 +153,7 @@ class AndroidSdk {
         .toList();
     }
 
-    // Match up platforms with the best cooresponding build-tools.
+    // Match up platforms with the best corresponding build-tools.
     _sdkVersions = platforms.map((String platformName) {
       int platformVersion;