[palette_generator] Fix typos (#487)

diff --git a/packages/palette_generator/CHANGELOG.md b/packages/palette_generator/CHANGELOG.md
index 691e046..b18d741 100644
--- a/packages/palette_generator/CHANGELOG.md
+++ b/packages/palette_generator/CHANGELOG.md
@@ -1,5 +1,6 @@
-## NEXT
+## 0.3.2
 
+* Fix typos
 * Fix `unnecessary_import` lint errors.
 
 ## 0.3.1
diff --git a/packages/palette_generator/lib/palette_generator.dart b/packages/palette_generator/lib/palette_generator.dart
index fac6f87..7f9f393 100644
--- a/packages/palette_generator/lib/palette_generator.dart
+++ b/packages/palette_generator/lib/palette_generator.dart
@@ -19,7 +19,7 @@
 
 /// A description of an encoded image.
 ///
-/// Used in [PaletteGenerator.fromEncodedImage].
+/// Used in [PaletteGenerator.fromByteData].
 class EncodedImage {
   /// Creates a description of an encoded image.
   const EncodedImage(
@@ -98,12 +98,12 @@
     _selectSwatches();
   }
 
-  // TODO(gspencergoog): remove `dart:ui` paragragh from [fromByteData] method when https://github.com/flutter/flutter/issues/10647 is resolved
+  // TODO(gspencergoog): remove `dart:ui` paragraph from [fromByteData] method when https://github.com/flutter/flutter/issues/10647 is resolved
 
   /// Create a [PaletteGenerator] asynchronously from encoded image [ByteData],
   /// width, and height. These parameters are packed in [EncodedImage].
   ///
-  /// The image encoding must be RGBA with 8-bit per channel, this corresponds to
+  /// The image encoding must be RGBA with 8 bits per channel, this corresponds to
   /// [ImageByteFormat.rawRgba] or [ImageByteFormat.rawStraightRgba].
   ///
   /// In contast with [fromImage] and [fromImageProvider] this method can be used
@@ -148,7 +148,7 @@
       encodedImage.byteData.lengthInBytes ~/ 4 ==
           encodedImage.width * encodedImage.height,
       "Image byte data doesn't match the image size, or has invalid encoding. "
-      'The encoding must be RGBA with 8 bit per channel.',
+      'The encoding must be RGBA with 8 bits per channel.',
     );
 
     final _ColorCutQuantizer quantizer = _ColorCutQuantizer(
diff --git a/packages/palette_generator/pubspec.yaml b/packages/palette_generator/pubspec.yaml
index 5923cb9..30054c1 100644
--- a/packages/palette_generator/pubspec.yaml
+++ b/packages/palette_generator/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Flutter package for generating palette colors from a source image.
 repository: https://github.com/flutter/packages/tree/master/packages/palette_generator
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+palette_generator%22
-version: 0.3.1
+version: 0.3.2
 
 environment:
   sdk: ">=2.12.0 <3.0.0"