Fix cell toolbar alignment for new margin

src/vs/workbench/contrib/notebook/browser/media/notebook.css

@@ -215,7 +215,7 @@
 	display: inline-block;
 	position: absolute;
 	height: 26px;
-	right: 32px;
+	right: 44px;
 	top: -12px;
 	/* this lines up the bottom toolbar border with the current line when on line 01 */
 	z-index: 30;