Four of the variables in the sample codeblock don't include underscores as defined in the variables section. This throws an error when using this sample code. To avoid others getting these errors I have updated the sample so it uses the right variables.
* Missing colon
* update sun
* format fix and adaptation
* fix format
* fix format 2
* fix format 3
* fix format
* fix format
* fix format
* format fix
* revert title as heads
* rename image case-sensitive
* rename again