A non-ASCII character was wrongly put in a comment, use the ACSII version.

Fixes: bee85e0e ("RDMA/erdma: Add main include file")
Link: https://lore.kernel.org/r/20221124114933.77250-1-chengyou@linux.alibaba.comSigned-off-by: NCheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: NJason Gunthorpe <jgg@nvidia.com>