Typo in file include/scn/scan.h, `assing_value_over_unexpected` should be `assign_value_over_unexpected`

[aandrejevas]

scnlib/include/scn/scan.h

Line 1070 in 4b8a740

void assing_value_over_unexpected(Other&& other) noexcept

This causes compile errors when compiling with -fno-exceptions