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/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 7e84a85..ad48fac 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -702,7 +702,7 @@
 		*p++ = htonl(resp->eof);
 		*p++ = htonl(resp->count);	/* xdr opaque 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 */