Charting: small style and typo fixes. (transferred from ManageIQ/manageiq@1eea7fcaf3f3562da6f5b0e7974f9c725119bf41)
Charting: small style and typo fixes.
(transferred from ManageIQ/manageiq@1eea7fcaf3f3562da6f5b0e7974f9c725119bf41)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic