RDMA/erdma: Fix a typo in annotation

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: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/erdma/erdma.h

@@ -219,7 +219,7 @@ struct erdma_dev {
 	DECLARE_BITMAP(sdb_page, ERDMA_DWQE_TYPE0_CNT);
 	/*
 	 * We provide max 496 uContexts that each has one SQ normal Db,
-	 * and one directWQE db。
+	 * and one directWQE db.
 	 */
 	DECLARE_BITMAP(sdb_entry, ERDMA_DWQE_TYPE1_CNT);