Wiki not accurate

[Barbatruuk]

The Wiki page is not accurate:

• The XSD mentioned in 'Getting Started' is not reachable (404 - Not Found);
• In Task Overview the examples are incorrect, for example "checkdirectoryaccessible". According to the example the element has name, read and write as attributes. According to the xsd@githubusercontent these should be path and writeable;
• The "Creating custom tasks" links to "../selfdiagnose/wiki/Creating-custom-tasks" which does not exist. "../selfdiagnose/wiki/Custom-tasks" does exist.