Merge pull request #2776 from Hixie/md-fixes

Miscellaneous dartdoc markdown fixes

packages/flutter/lib/painting.dart

@@ -9,6 +9,7 @@
 /// images, interpolating between shadows, painting borders around boxes, etc.
 ///
 /// In particular:
+///
 ///  * Use the [TextPainter] class for painting text.
 ///  * Use [Decoration] (and more concretely [BoxDecoration]) for
 ///    painting boxes.

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

@@ -31,8 +31,7 @@ const Interval _kChildSegueInterval = const Interval(0.65, 1.0);
 /// If the [onPressed] callback is not specified or null, then the button will
 /// be disabled, will not react to touch.
 ///
-/// See also:
-///  * https://www.google.com/design/spec/components/buttons-floating-action-button.html
+/// See also: <https://www.google.com/design/spec/components/buttons-floating-action-button.html>
 class FloatingActionButton extends StatefulWidget {
   const FloatingActionButton({
     Key key,

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

@@ -24,8 +24,9 @@ import 'theme.dart';
 /// handler.
 ///
 /// See also:
+///
 ///  * [FlatButton] class
-///  * https://www.google.com/design/spec/components/buttons.html
+///  * <https://www.google.com/design/spec/components/buttons.html>
 class RaisedButton extends MaterialButton {
   RaisedButton({
     Key key,

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

@@ -35,8 +35,7 @@ const Curve _snackBarFadeCurve = const Interval(0.72, 1.0, curve: Curves.fastOut
 /// Snack bar actions are always enabled. If you want to disable a snack bar
 /// action, simply don't include it in the snack bar.
 ///
-/// See also:
-///  * https://www.google.com/design/spec/components/snackbars-toasts.html
+/// See also: <https://www.google.com/design/spec/components/snackbars-toasts.html>
 class SnackBarAction extends StatelessWidget {
   SnackBarAction({Key key, this.label, this.onPressed }) : super(key: key) {
     assert(label != null);
@@ -68,9 +67,10 @@ class SnackBarAction extends StatelessWidget {
 /// Displayed with the Scaffold.of().showSnackBar() API.
 ///
 /// See also:
+///
 ///  * [Scaffold.of] and [ScaffoldState.showSnackBar]
 ///  * [SnackBarAction]
-///  * https://www.google.com/design/spec/components/snackbars-toasts.html
+///  * <https://www.google.com/design/spec/components/snackbars-toasts.html>
 class SnackBar extends StatelessWidget {
   SnackBar({
     Key key,

packages/flutter_sprites/lib/src/sprite_box.dart

@@ -2,16 +2,16 @@ part of flutter_sprites;
 
 /// Options for setting up a [SpriteBox].
 ///
-///  * [nativePoints], use the same points as the parent [Widget].
-///  * [letterbox], use the size of the root node for the coordinate system, constrain the aspect ratio and trim off
-///  areas that end up outside the screen.
-///  * [stretch], use the size of the root node for the coordinate system, scale it to fit the size of the box.
-///  * [scaleToFit], similar to the letterbox option, but instead of trimming areas the sprite system will be scaled
-///  down to fit the box.
-///  * [fixedWidth], uses the width of the root node to set the size of the coordinate system, this option will change
-///  the height of the root node to fit the box.
-///  * [fixedHeight], uses the height of the root node to set the size of the coordinate system, this option will change
-///  the width of the root node to fit the box.
+///  * [nativePoints]: use the same points as the parent [Widget].
+///  * [letterbox]: use the size of the root node for the coordinate system, and constrain the aspect ratio and trim off
+///    areas that end up outside the screen.
+///  * [stretch]: use the size of the root node for the coordinate system, and scale it to fit the size of the box.
+///  * [scaleToFit]: similar to the letterbox option, but instead of trimming areas the sprite system will be scaled
+///    down to fit the box.
+///  * [fixedWidth]: use the width of the root node to set the size of the coordinate system, and change
+///    the height of the root node to fit the box.
+///  * [fixedHeight]: use the height of the root node to set the size of the coordinate system, and change
+///    the width of the root node to fit the box.
 enum SpriteBoxTransformMode {
   nativePoints,
   letterbox,