Add a link to the initialisation assembly for toolkit initialisation settings

[adecler]

NOTE: Depends on

BHoM/BHoM#1698

NOTE: Used by

BHoM/BHoM_UI#531

Issues addressed by this PR

See BHoM/BHoM#1698 and BHoM/BHoM_UI#531 for more details

This PR aligns with the changes made in BHoM/BHoM#1698

[bhombot-ci]

@adecler just to let you know, I have provided a check-versioning result to this Pull Request as it was detected to be linked to other Pull Requests in a series. The comment which triggered this check came from @adecler on BHoM_UI

[bhombot-ci]

@adecler just to let you know, I have provided a check-versioning result to this Pull Request as it was detected to be linked to other Pull Requests in a series. The comment which triggered this check came from @adecler on BHoM_Engine