Fix small typo in 999-big-list-of-options.md (#4768)

Co-authored-by: Lukas Taegert-Atkinson <lukastaegert@users.noreply.github.com>

docs/999-big-list-of-options.md

@@ -91,7 +91,7 @@ export default {
 };
 ```
 
-If you want to convert a set of file to another format while maintaining the file structure and export signatures, the recommended way—instead of using [`output.preserveModules`](guide/en/#outputpreservemodules) that may tree-shake exports as well as emit virtual files created by plugins—is to turn every file into an entry point. You can do so dynamically e.g. via the `glob` package:
+If you want to convert a set of files to another format while maintaining the file structure and export signatures, the recommended way—instead of using [`output.preserveModules`](guide/en/#outputpreservemodules) that may tree-shake exports as well as emit virtual files created by plugins—is to turn every file into an entry point. You can do so dynamically e.g. via the `glob` package:
 
 ```js
 import glob from 'glob';