nfsd: fix comment typo in nfsxdr

The file contains a spelling error in a source comment (occured).

Typos in comments reduce readability and make text searches less reliable
for developers and maintainers.

Replace 'occured' with 'occurred' in the affected comment. This is a
comment-only cleanup and does not change behavior.

Signed-off-by: Joseph Salisbury <[email protected]>
Signed-off-by: Chuck Lever <[email protected]>

Author: josephtsalisbury

fs/nfsd/nfsxdr.c

@@ -605,7 +605,7 @@ svcxdr_encode_entry_common(struct nfsd_readdirres *resp, const char *name,
  *
  * Return values:
  *   %0: Entry was successfully encoded.
- *   %-EINVAL: An encoding problem occured, secondary status code in resp->common.err
+ *   %-EINVAL: An encoding problem occurred, secondary status code in resp->common.err
  *
  * On exit, the following fields are updated:
  *   - resp->xdr