Outdated Flems example for Simple Application

[tbreuss]

The referenced Flems for the Simple Application on the website under https://mithril.js.org/simple-application.html in the second paragraph "An interactive example of the end result can be seen here" is using Mithril version 1.1.6.

This is quite misleading or confusing when reading the simple application guide and comparing code snippets.

This is the referenced Flems link.

The Mithril dependency in Flems is https://unpkg.com/mithril@1.1.6/mithril.js.

As a solution we should migrate the Flems example to version 2.0.4 and then update the link as described above.

[tbreuss]

Have a working 2.0.4 version at https://mithril-by-examples.tebe.ch/examples/simple-application/. The Flems link could be copied from there.

[StephanHoyer]

@tbreuss can you create a PR that fixes this?

[tbreuss]

@StephanHoyer See my PR.