Update Vadim Makeev’s links

[pepelsbey]

• Update Twitter handle (it was renamed)
• Update the website link to the current one

Please disregard if you’re not supposed to change last year’s results. Though the links are outdated/broken, so it might still be useful.

[SachaG]

Thanks! These JSONs are auto-generated so I don't usually modify them directly, but it also doesn't really hurt :)