Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index 4ce005d..65ec595 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -451,7 +451,7 @@
 	*p++ = htonl(resp->count);
 	xdr_ressize_check(rqstp, p);
 
-	/* now update rqstp->rq_res to reflect data aswell */
+	/* now update rqstp->rq_res to reflect data as well */
 	rqstp->rq_res.page_len = resp->count;
 	if (resp->count & 3) {
 		/* need to pad the tail */