Fixed bug EXT-6881 ([FORMATTING] Acerca del terreno (About Land) window >...

Fixed bug EXT-6881 ([FORMATTING] Acerca del terreno (About Land) window > Contrato tab. Space in blank needed).

Added a space after the colon, so the translatable string is now "Last Modified: ".

Reviewed by Mike: https://codereview.productengine.com/secondlife/r/272/

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branch : product-engine