Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c
index 7e24164..6fa2146 100644
--- a/fs/xfs/quota/xfs_dquot.c
+++ b/fs/xfs/quota/xfs_dquot.c
@@ -600,7 +600,7 @@
 
 	/*
 	 * Reservation counters are defined as reservation plus current usage
-	 * to avoid having to add everytime.
+	 * to avoid having to add every time.
 	 */
 	dqp->q_res_bcount = be64_to_cpu(ddqp->d_bcount);
 	dqp->q_res_icount = be64_to_cpu(ddqp->d_icount);