Fix d3 url
Fix d3 url

gds-attic/transactions-explorer,alphagov/transactions-explorer,alphagov/transactions-explorer,alphagov/transactions-explorer,alphagov/transactions-explorer,gds-attic/transactions-explorer,alphagov/transactions-explorer,gds-attic/transactions-explorer,gds-attic/transactions-explorer,gds-attic/transactions-explorer