IB/qib: Fix typo in comment

Spelling mistake (triple letters) in comment.
Detected with the help of Coccinelle.

Link: https://lore.kernel.org/r/20220521111145.81697-56-Julia.Lawall@inria.fr
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

Author: JuliaLawall

drivers/infiniband/hw/qib/qib.h

@@ -678,7 +678,7 @@ struct qib_pportdata {
 /* Observers. Not to be taken lightly, possibly not to ship. */
 /*
  * If a diag read or write is to (bottom <= offset <= top),
- * the "hoook" is called, allowing, e.g. shadows to be
+ * the "hook" is called, allowing, e.g. shadows to be
  * updated in sync with the driver. struct diag_observer
  * is the "visible" part.
  */