Update pages/aws/config/reference.mdx

Co-authored-by: conico974 <nicodorseuil@yahoo.fr>

Author: sommeeeer

pages/aws/config/reference.mdx

@@ -78,7 +78,7 @@ import { Tabs } from 'nextra/components'
 
       ##### `additionalArgs`
 
-      Additional arguments to pass to the install command (npm install). It is a string.
+      Additional arguments to pass to the install command (npm install). It is a string that will get appended to the `npm install` command.
 
       Here is an example of how to install sharp on your default server function with ARM64 architecture:
       ```ts