Rename Non-US backslash to ISO <>

[HomerSp]

As per #51 the extra ISO key next to the left shift key is named rather confusingly. This fixes that by renaming it to ISO <>.
I don't know why it has the name it does now, or if this key is used for anything else, so if you'd rather keep it with the old name feel free to just close this.

[AlexDygma]

Hey @HomerSp ! Thanks for your continued support 🤩.

But in this case, this change should be made in the nordic layout, not in the punctuation layout, because for the rest of the supported languages the change may or may not be the same, (in this case for the languages that we have it's the same, but that doesn't count future languages), so even tho this works we need to make additional changes to map the particular changes in each language and leave the key representation as <, and when applying shift, we should show >, and AltGr should show | in nordic, but not in spanish for example.

Either Way i'll merge this because it's a good enough temporal solution for this problem and i wont be able to fix the language keys before the end of next week.