make build complete on Windows due to different path separator

rollup.config.js

@@ -8,7 +8,7 @@ function wrap () {
   return {
     name: 'rollup-plugin-wrap',
     transform (content, id) {
-      if (id.endsWith('highlightjs-line-numbers.js/src/highlightjs-line-numbers.js')) {
+      if (id.match(/highlightjs-line-numbers.js[\\/]src[\\/]highlightjs-line-numbers.js$/)) {
         content = `export default function init(hljs) {
 
   window.hljs = hljs