docs(plugins): clarify function provided to splitChunks.name (#3118)

Author: ryandrew14

src/content/plugins/split-chunks-plugin.md

@@ -11,6 +11,7 @@ contributors:
   - madhavarshney
   - sakhisheikh
   - superburrito
+  - ryandrew14
 related:
   - title: webpack's automatic deduplication algorithm example
     url: https://github.com/webpack/webpack/blob/master/examples/many-pages/README.md
@@ -169,6 +170,8 @@ The name of the split chunk. Providing `true` will automatically generate a name
 
 Providing a string or a function allows you to use a custom name. Specifying either a string or a function that always returns the same string will merge all common modules and vendors into a single chunk. This might lead to bigger initial downloads and slow down page loads.
 
+If you choose to specify a function, you may find the `chunk.name` and `chunk.hash` properties (where `chunk` is an element of the `chunks` array) particularly useful in choosing a name for your chunk.
+
 If the `splitChunks.name` matches an [entry point](/configuration/entry-context/#entry) name, the entry point will be removed.
 
 T> It is recommended to set `splitChunks.name` to `false` for production builds so that it doesn't change names unnecessarily.