Docs showing invalid shell scripts

[jghiloni]

Describe the bug
The task reference documentation, which very conveniently has the ability to copy the whole block of a task or shell script, is missing the shebang (#!) for all of the task sh files

To Reproduce
Steps to reproduce the behavior:

1. Go to the docs
2. Click on Task Reference
3. Pick any task and click on its Implementation
4. Do not see the shebangs present

Expected behavior
The shebangs will be present

Additional context
The code_snippet comments can be moved above the shebang to fix the problem. I will look into providing a PR fix.

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