* modified scripts comments and contributing.md to solve conflicts between them
* modified default value for checktypes and added NoArgs enum value
* added burn tch installation link
* Removed NoArgs enum value and use All as default
* Fixes to code examples in section 5.2
* A more generic way to get a device for code examples in Burn book section 5.2
* Change run-checks instruction + fix comment spacing
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Co-authored-by: hrishim <hrishim@gail.com>
Co-authored-by: Guillaume Lagrange <lagrange.guillaume.1@gmail.com>