hate symbol in move_semantics exercises

[mirsch]

Even though I admire the beauty of the 8, maybe you consider not using 88 so prominently in exercises move_semantics1.rs, move_semantics2.rs and move_semantics3.rs.
This is one of the most commonly used symbols by right-wing radicals, racists and neo-Nazis.
See https://www.adl.org/resources/hate-symbol/88
In some federal states in Germany it is even forbidden to have this number on a car license plate.

[frroossst]

for reference
move_semantics1.rs
move_semantics2.rs
move_semantics3.rs

I don't see why we can't simply change the range from [22, 44, 66, 88] to [11, 33, 55, 77]

Waiting on feedback of the maintainers and other contributors.