You will want to link tasks with Confluence pages, Jira issues, or other contents. Gantt chart tasks can have a web link to arbitrary URLs. If tasks have a web link, you can go to the URL when you click the task name.
URL protocol must be HTTPS, HTTP, FTPS, or FTP.
How to add a web link to tasks
Show the web link column.
Double click the cell of the web link column to start editing. And, write a URL in the cell of the web link column.
You can also edit web links with the task editor. The web link field is under the advanced tab.