docs/guidance/map/framework_agreements.md: Update diagram

[duncandewhurst]

• Closes Framework agreements: Remove planning stage from diagram #1698
• Closes Framework agreements: Should the contracts array be populated in the first-stage contracting process? #1699
• Use SVG format for diagram for ease of editing if the source file is lost

[duncandewhurst]

Spell-check failures are unrelated to this PR.

[duncandewhurst]

@jpmckinney I updated the only source file that I had access to which was marked 'old do not use'. Flagging in case you want to file the updated diagram somewhere on OCP's drive.

[jpmckinney]

Here is the copy owned by an OCP account: https://docs.google.com/drawings/d/1lnvpOxW5YP-BTWTDBhSfKoat_F7TaXEi8u09JtT_Z2A/edit