Follow en-GB style guide

[brianteeman]

This language string created by the JSST is not correct - see the style guide https://developer.joomla.org/en-gb-user-interface-text-guidelines/action-or-description.html

[Quy]

I have tested this item ✅ successfully on f175bf4

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[richard67]

I have tested this item ✅ successfully on f175bf4

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/22563.}

[Quy]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/22563.}

[brianteeman]

Thanks