[#53420683] Updated the "Add a child during group registration" page.
[#53420683] Fixed some wording and removed unused inline styles.
Merge branch 'master' of https://github.com/AllPlayers/brochure.allplayers.com into 53420683-update_kb-add-a-child-during-group-registration
[#53420683] Replaced all <b> tags with <strong> tags.
Merge pull request #141 from jdarling91/53420683-update_kb-add-a-child-during-group-registration

[#53420683] Updates the "Add a child during group registration" page.