Desktop: Fixes #3903: Header links with special characters were no longer working

readme/api/tutorials/toc_plugin.md

@@ -125,17 +125,17 @@ joplin.plugins.register({
 });
 ```
 
-Later you will also need a way to generate the slug for each header. A slug is an identifier which is used to link to a particular header. Essentially a header text like "My Header" is converted to "my-header". And if there's already a slug with that name, a number is appended to it. Without going into too much details, you will need the "slug" package to generate this for you, so install it using `npm i -s slug` from the root of your plugin directory.
+Later you will also need a way to generate the slug for each header. A slug is an identifier which is used to link to a particular header. Essentially a header text like "My Header" is converted to "my-header". And if there's already a slug with that name, a number is appended to it. Without going into too much details, you will need the "slug" package to generate this for you, so install it using `npm i -s uslug` from the root of your plugin directory.
 
 Then this is the function you will need for Joplin, so copy it somewhere in your file:
 
 ```typescript
-const nodeSlug = require('slug');
+const uslug = require('uslug');
 
 let slugs = {};
 
 function headerSlug(headerText) {
-	const s = nodeSlug(headerText);
+	const s = uslug(headerText);
 	let num = slugs[s] ? slugs[s] : 1;
 	const output = [s];
 	if (num > 1) output.push(num);