docs: don't redirect "npm config' to itself (#6155)

The `npm config` page redirects to itself in the "See also" section.

Author: Ivan Poiraudeau

docs/lib/content/commands/npm-config.md

@@ -90,7 +90,6 @@ global config.
 ### See Also
 
 * [npm folders](/configuring-npm/folders)
-* [npm config](/commands/npm-config)
 * [package.json](/configuring-npm/package-json)
 * [npmrc](/configuring-npm/npmrc)
 * [npm](/commands/npm)