Typo on Polymer Project

[stefanbo...@gmail.com]

Hey on page https://pwa-starter-kit.polymer-project.org/configuring-and-personalizing

Under section "Create a new page"

• In this new file, rename the class to MyView404 to MyView4 (in 2 places), and the element’s name to my-view4. When you’re done, it should look like this:
  
  
  This should be "rename the class from MyView404 to MyView4"