Remove unneeded whitespace (#1338)

Author: jbampton

CHANGELOG.md

@@ -50,7 +50,7 @@ Requires Elixir v1.10.
     * [mix docs] Allow files with no extension in extra files (`26b93b6`)
     * [mix docs] Link to siblings in an umbrella (`b0d6fdd`)
     * [mix docs] Switch to `earmark_parser`. Run `mix deps.unlock --unused` to remove the now
-      unused `earmark` dependency.  (`021c772`)
+      unused `earmark` dependency. (`021c772`)
 
   * Bug fixes
     * [HTML+EPUB] Bring back auto-linking to Kernel and Kernel.SpecialForms (`fa174eb`)

test/fixtures/ExtraPageWithSettextHeader.md

@@ -1,4 +1,4 @@
-Extra Page Title  [![Build Status](https://travis-ci.org/username/project_name.svg?branch=master)](https://travis-ci.org/username/project_name) [![Coverage Status](https://coveralls.io/repos/github/username/project_name/badge.svg?branch=master&cache=1)](https://coveralls.io/github/username/project_name) [![hex.pm version](https://img.shields.io/hexpm/v/project_name.svg)](https://hex.pm/packages/project_name) [![hex.pm downloads](https://img.shields.io/hexpm/dt/project_name.svg)](https://hex.pm/packages/project_name)
+Extra Page Title [![Build Status](https://travis-ci.org/username/project_name.svg?branch=master)](https://travis-ci.org/username/project_name) [![Coverage Status](https://coveralls.io/repos/github/username/project_name/badge.svg?branch=master&cache=1)](https://coveralls.io/github/username/project_name) [![hex.pm version](https://img.shields.io/hexpm/v/project_name.svg)](https://hex.pm/packages/project_name) [![hex.pm downloads](https://img.shields.io/hexpm/dt/project_name.svg)](https://hex.pm/packages/project_name)
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