fix `Robert Hübner` name.
fix `Robert Hübner` name.

https://lichess.org/forum/lichess-feedback/wrong-spelling-in-tournament-motto

luanlv/lila,luanlv/lila,arex1337/lila,arex1337/lila,arex1337/lila,luanlv/lila,arex1337/lila,arex1337/lila,luanlv/lila,luanlv/lila,luanlv/lila,arex1337/lila,luanlv/lila,arex1337/lila