[Improvement] path to conformance: explain levels

[winterrocks]

Describe the improvement

https://github.com/OpenChain-Project/Reference-Material/blob/master/Path-to-Conformance/Official/en/path-to-conformance-version-1.md talks about 3 levels, but with quick look I did not find definitions what these levels are.

Additional context

Add short description to each level. There are different open source maturity models:

• https://opensource.com/open-organization/resources/open-org-maturity-model has 3 levels
• https://debricked.com/blog/what-is-open-source-maturity-model/ (thanks Calle) has 5 levels

Expected behavior

A reader knows at which level his/her organization is at the moment

[myagi2019]

The document is now here : https://github.com/OpenChain-Project/Reference-Material/blob/master/OpenChain-Adoption-Guides/Legacy/OpenChain-Path-to-Conformance/en/path-to-conformance-version-1.md

Note that it is in a "legacy" folder. Given that it's very short and not consistent with the (newer) capability model, I propose to close this issue (not maintain legacy information).

@winterrocks is that OK with you?

[winterrocks]

Hi @myagi2019

On https://github.com/OpenChain-Project/Reference-Material/blob/master/OpenChain-Adoption-Guides/Legacy/OpenChain-Path-to-Conformance/en/path-to-conformance-version-1.md

Level 1
https://github.com/OpenChain-Project/Reference-Material/raw/master/Training-Slides/Official/2.1/en/openchain-reference-training-slides-for-ISO-5230-en.pptx is a dead link

https://github.com/OpenChain-Project/Reference-Material/tree/master/OpenChain-Training/en/Training-Slides/Training-Slides/en likely the correct link.

Level 2
https://github.com/OpenChain-Project/Reference-Material/raw/master/Suppliers/Leaflet/Official/2.1/en/supplier-leaflet-en.pdf link gives 404 too.

https://github.com/OpenChain-Project/Reference-Material/tree/master/OpenChain-Supplier-Education/en/Supplier-Education-Leaflet-ISO-IEC-5230-(OpenChain%202.1) seems the correct folder.