docs: updated install hint for gatsby-plugin-typography (#9865)

Added typography and react-typography to the gatsby-plugin-typography install note, because these two peer dependencies need to be installed as well. Same as on the package overview [here](https://www.gatsbyjs.org/packages/gatsby-plugin-typography/).
gatsbyjs · Nov 11, 2018 · cfa3ce0 · cfa3ce0
1 parent 78c65db
commit cfa3ce0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/docs/typography-js.md b/docs/docs/typography-js.md
@@ -10,7 +10,7 @@ Typography.js is a JavaScript library that enables you to define and explore the
 
 Gatsby has the plugin `gatsby-plugin-typography` to assist with introducting Typography.js library into your project.
 
-You can install the plugin into your project by running the command `npm install gatsby-plugin-typography --save`
+You can install the plugin and its peer dependencies into your project by running the command `npm install gatsby-plugin-typography react-typography typography --save`
 
 After the installation of the plugin has completed, navigate to your `gatsby-config.js` file located in the root of your project's directory and add the plugin to the configuration: