[HelpHub] Remove redundant block name from "settings" panels

[femkreations]

Update for 6.1

• Remove redundant block name from "settings" panels 40275

Update the settings screenshots for the following articles.

• https://wordpress.org/support/article/latest-comments-block/
• https://wordpress.org/support/article/rss-block/
• https://wordpress.org/support/article/tag-cloud-block/

[Leonardus-Nugraha]

Screenshot for latest comment block:

Screenshot for RSS block:

Screenshot for tag cloud block:

[femkreations]

Thanks @Leonardus-Nugraha I've updated the screenshots on these pages. Also tweaked the changelog styles and added missing settings in the pages and linked to their overview page.