修复表格表头

kit/table-kit.js

@@ -12,9 +12,8 @@ module.exports = class TableKit {
   }
 
   printTitles() {
-    const colWidth = 30
     const padTitles = this.titles.map((title) => {
-      return title.padEnd(colWidth, ' ')
+      return title.padEnd(this.colWidth, ' ')
     })
     const titleLine = (() => {
       let titleLine = ''