Remove HTML code from Attachment translations

Translations that contain code of any type may represent a problem for the non-technical contributors. The following are the attachment component translations that need to be fixed, located at https://github.com/xwiki/xwiki-platform/blob/master/xwiki-platform-core/xwiki-platform-attachment/xwiki-platform-attachment-api/src/main/resources/ApplicationResources.properties#L22

An attachment with the given name ({0}) already exists on <a href="{2}">{1}</a>. Please provide a different name.

Move {0} from <a href="{2}">{1}</a>