Fullscreen Resolution value is untranslatable

The Bug:

Since the addition of strings such as "options.percent_value", "options.framerate" and "options.pixel_value", translators have been able to adjust whether or not a space should be used between a measurement and its unit in their language.

The value that follows "options.fullscreen.resolution" (Fullscreen Resolution) does not have any strings that makes it possible to change the widthxheight@refreshrate (xxbit) format.

Steps to Reproduce:

1. Attempt to search for the existence of the string "@" by using this search filter on the official Crowdin project.
2. Take note that a string concerning this issue will not appear in the results.

Expected Behavior:

The string containing resolution information should be translatable to maintain consistency with other strings, such as "options.pixel_value" (%s: %spx) and "options.percent_value" (%s: %s%%).