CCM-11445: Update create letter page title and url#599

ClareJonesBJSS merged 4 commits intomainNHSDigital/nhs-notify-web-template-management:mainfrom

feature/CCM-11445_update_create_letter_titleNHSDigital/nhs-notify-web-template-management:feature/CCM-11445_update_create_letter_titleCopy head branch name to clipboard