426b69830e
Commit ea56fa3d47 ("BaseTools: Enable RISC-V architecture for RISC-V
EDK2 CI") introduced a UTF-8 NBSP (0xc2a0) inside a comment block
otherwise copied identically from pre-existing architectures.
This was clearly unintentional and confuses things when looking for
which files contain UTF-8 encodings, so change it to good old 0x20.
Signed-off-by: Leif Lindholm <quic_llindhol@quicinc.com>