minor correction in comments

Author: priyatharsan

_posts/plotly_js/layout/tick-format/2018-12-17-how-to-tick-format-layout.html

@@ -43,7 +43,7 @@
     showtickprefix: 'all',
     tickprefix: string,
 
-    /* Set the ticks to display with a prefix: "all" or "first" or "last" or "none" */
+    /* Set the ticks to display with a suffix: "all" or "first" or "last" or "none" */
     showticksuffix: 'all',
     ticksuffix: string,