update pathway figure to 2.0 in Governance and Legal section and fix wrong link issue #82

[amycurwin]

2 fixes, updated pathway figure to v2 and fix broken link to Node Operations Guideline

Description

figure should be updated to 2.0 and link to v2.1

Motivation and Context

figure and link are old versions

#91
#82

How has this been tested?

preview in my fork

What should reviewers focus on?

there are some other commits from our training session. they have all been reverted to original format and don't affect anything

Types of changes

• [ X] Bug fix (non-breaking change which fixes an issue)
• New content (non-breaking change which adds new content)
• Modified content (non-breaking change which modifies existing content)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [ X] I have read the CONTRIBUTING.md guide.
• [X ] My changes follow the code style of this project.
• [ X] I have updated supporting documentation, if required.
• [ X] I have added my details to the CONTRIBUTORS.yaml file.