As a potential mismatch reviewer
I want to get a quick intro to the tool
in order to understand what I can do in the Mismatch Finder Website

Problem:
We need an intro text to the tool that gives an overview of what the tool is about.

Screenshots/mockups:

Text
About this tool
The Mismatch Finder shows you data in Wikidata that differs with the data in another database, catalog or website (for example, someone's date of birth in Wikidata doesn't match the corresponding entry in the German National Library catalogue). Mismatches like this need fixing, and the Mismatch Finder helps you to do just that. Find out more

Acceptance criteria:

• We have the intro text of the mismatch finder website in place.

Note:

• This does not yet include:
  • The heading T287571
  • The dialog with more detailed FAQ T287357
• The intro text is shown when you open the main page of the Mismatch Finder website: it is shown to everyone regardless of their login status.