Fix issue 56 in mu-editor-github.io - add help links

[prcutler]

Hi,

This pr fixes Issue 56 in the mu-editor.github.io repo: https://github.com/mu-editor/mu-editor.github.io/issues/56

I removed contributor email addresses to avoid user emails and let users know where to go for help with links to the bug tutorial and Github Discussions.

If any changes are needed, just let me know. Thanks!