Jira install has a broken link to ours MySQL documentation

Issue Summary

When connecting Jira to MySQL, you're required to manually download the JDBC driver from their website. The installation system warns you that, however, links to documentation that no longer exists.

This is reproducible on Data Center: yes

Steps to Reproduce

1. Set up a new Jira installation;
2. Select MySQL as the database type;
3. Click on the "our documentation" link provided

The problem seems to be caused by missing versions in the DOCS API. For example, the URL generated by the "SetupDatabase.java" page for Jira 9.0 correctly redirect the users to the Jira 9.0 documentation for database instructions:

• https://docs.atlassian.com/jira/jadm-docs-090/Connecting+Jira+applications+to+a+database

However, the URL for Jira 9.1 and above doesn't work, and instead redirects the user to a NotFound page:

• https://docs.atlassian.com/jira/jadm-docs-093/Connecting+Jira+applications+to+a+database

Expected Results

The documentation exists and actually helps the user to install the driver.

Actual Results

The user is redirected to an invalid link.

Workaround

See the instructions on the documentation below:

• https://confluence.atlassian.com/jiracore/connecting-jira-to-mysql-8-0-1018272102.html