minor #1169 [Translator] Docs: fix link for tree shaking (jmsche)

This PR was merged into the 2.x branch.

Discussion
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[Translator] Docs: fix link for tree shaking

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Tickets       | N/A
| License       | MIT

Commits
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5c9324c [Translator] Docs: fix link for tree shaking

src/Translator/doc/index.rst

@@ -67,7 +67,7 @@ When warming up the Symfony cache, all of your translations will be dumped as Ja
 For a better developer experience, TypeScript types definitions are also generated aside those JavaScript files.
 
 Then, you will be able to import those JavaScript translations in your assets.
-Don't worry about your final bundle size, only the translations you use will be included in your final bundle, thanks to the [tree shaking](https://webpack.js.org/guides/tree-shaking/).
+Don't worry about your final bundle size, only the translations you use will be included in your final bundle, thanks to the `tree shaking <https://webpack.js.org/guides/tree-shaking/>`_.
 
 Configuring the default locale
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~