fix docs generation for yes config

Author: ruyadorno

docs/content/using-npm/config.md

@@ -1343,8 +1343,8 @@ workspaces.
 
 #### `yes`
 
-* Default: false
-* Type: Boolean
+* Default: null
+* Type: null or Boolean
 
 Automatically answer "yes" to any prompts that npm might print on the
 command line.

docs/nav.yml

@@ -66,6 +66,9 @@
   - title: npm explore
     url: /commands/npm-explore
     description: Browse an installed package
+  - title: npm find-dupes
+    url: /commands/npm-find-dupes
+    description: Find duplication in the package tree
   - title: npm fund
     url: /commands/npm-fund
     description: Retrieve funding information