[fix] broken link

Author: vashkinazi

docs/api/spreadsheet_importmodulepath_config.md

@@ -36,7 +36,7 @@ To import files you need to:
 - install the **Excel2json** library
 - set the path to the **worker.js** file via the **importModulePath** option in one of the two ways:
   - by providing a local path to the file on your computer, like: **"../libs/excel2json/1.0/worker.js"**
-  - by providing a link to the file from CDN: **"https://cdn.dhtmlx.com/libs/excel2json/1.0/worker.js"**
+  - by providing a link to the file from CDN: "**https://cdn.dhtmlx.com/libs/excel2json/1.0/worker.js**"
 
 By default the link to CDN is used.