Guided Tour to Explain the Accessibility Plugin

[sdwjoomla]

When the Accessibility plugin is revised/updated a guided tour is needed

[sdwjoomla]

@webiedesign added to the agenda for 5-Dec to discuss with the team

1. If can directly link to the filtered results in the Plugin Manager updating steps 2 & 3
2. Confirm the image for the final step should be in media/com_guidedtours/images/core_tours where core_tours is a new directory
3. Adding to 6.1 release target