[FIX] account: reconcile screen, btns alignment

addons/account/static/src/scss/account_reconciliation.scss

@@ -229,10 +229,8 @@
         }
     }
 
-    .o_reconcile_models {
-        .btn-primary + .btn-primary {
-            margin-left: 2px;
-        }
+    .o_reconcile_models .btn-primary {
+        margin: 0 2px 3px 0;
     }
 
     /* Match view */