Update README.md

[al-fisher]

NOTE: Depends on

BHoM/documentation#92

as part of restructuring documentation navigation.

[al-fisher]

@BHoMBot check required

[bhombot-ci]

@al-fisher to confirm, the following actions are now queued:

• check code-compliance
• check documentation-compliance
• check project-compliance
• check core
• check null-handling
• check serialisation
• check versioning
• check installer

[bhombot-ci]

This repository is not part of the beta package and does not require a versioning check to be performed.

[bhombot-ci]

This repository is not part of the installer package, and does not require an installer check.

[FraserGreenroyd]

Changes align with documentation changes, approving so this will be ready for merge once documentation goes in.