Remove trailing slash - #7503

Changed pages include:

• cloud/guides/enable-ssh-ubuntu/index.html - view
• cloud/guides/getting-started-with-black-and-isort/index.html - view
• cloud/guides/how-to-install-and-configure-hubzilla/index.html - view
• cloud/guides/migrate-from-aws-security-groups-to-cloud-firewalls/index.html - view
• cloud/guides/migrate-from-azure-firewall-to-cloud-firewalls/index.html - view
• cloud/guides/migrate-from-google-cloud-next-generation-firewall-to-cloud-firewalls/index.html - view
• cloud/guides/use-app-platform-to-deploy-wordpress/index.html - view
• cloud/guides/using-metadata-cloud-init-on-any-distribution/index.html - view
• cloud/guides/what-is-open-source-software/index.html - view
• cloud/marketplace-docs/guides/passbolt/index.html - view