Fix README.

Change-Id: Iefb2dcf711130708d7059f281603c8fcfb5c493b

Author: nickbutcher

Owl/README

@@ -4,13 +4,13 @@
 
 ## Introduction
 Owl is an educational app that uses Material Design components and [Material Theming](https://material.io/design/material-theming) to create an energetic, motivational brand experience.
-This project is the Android implementation of [Owl](https://material.io/design/material-studies/owl.html), a Material study meant to showcase componentry and Theming using the [Material Components for Android library](https://github.com/material-components/material-components-android).
+This project is an Android implementation of [Owl](https://material.io/design/material-studies/owl.html), a Material study meant to showcase componentry and theming using the [Material Components for Android library](https://github.com/material-components/material-components-android).
 
 ## Screenshots
 <img src="screenshots/owl_demo.gif" alt="Owl sample demo"/>
 
 ## Material Theming
-Owl employs material theming to reflect the energy and excitement of learning a new skill, using a bold aesthetic and unfilled shapes that invite the user to populate them with new content and courses. The app customizes color, shape and typography to achieve this.
+Owl employs material theming to reflect the energy and excitement of learning a new skill, using a bold aesthetic and unfilled shapes that invite the user to populate them with new content and courses. The app customizes [color](https://material.io/develop/android/theming/color/), [shape](https://material.io/develop/android/theming/shape/) and [typography](https://material.io/develop/android/theming/typography/) to achieve this.
 
 ### Color
 <img src="screenshots/color_header.png" alt="Owl color theming"/>
@@ -25,7 +25,7 @@ Owl defines small, medium and large shape categories for different sized compone
 ### Typography
 <img src="screenshots/type_header.png" alt="Owl typography theming"/>
 
-Owl’s type scale provides the typographic variety necessary for the app content. All items in the type scale use [Rubik](https://fonts.google.com/specimen/Rubik) as the typeface, and make use of the variety of weights available by using Rubik Regular, Medium, and Bold. See [type.xml](https://github.com/material-components/material-components-android-examples/blob/develop/owl/app/src/main/res/values/type.xml) which defines `TextAppearance`s which are then [set in the theme](https://github.com/material-components/material-components-android-examples/blob/develop/owl/app/src/main/res/values/themes.xml#L25-L38) and referred to using `?attr/TextAppearance.Owl.*` throughout.
+Owl’s type scale provides the typographic variety necessary for the app content. All items in the type scale use [Rubik](https://fonts.google.com/specimen/Rubik) as the typeface, and make use of the variety of weights available by using Rubik Regular, Medium, and Bold. See [type.xml](https://github.com/material-components/material-components-android-examples/blob/develop/owl/app/src/main/res/values/type.xml) which defines `TextAppearance`s which are then [set in the theme](https://github.com/material-components/material-components-android-examples/blob/develop/owl/app/src/main/res/values/themes.xml#L25-L38) and referred to using `?attr/textAppearance[...]` throughout.
 
 ## License