[Docs] Fix a couple of references to the docs folder

docs/modules/ROOT/pages/contributing.adoc

@@ -34,7 +34,7 @@ adding or improving Cop descriptions.
 
 === Working on the Docs
 
-The manual is generated from the AsciiDoc files in the link:https://github.com/rubocop-hq/rubocop/tree/master/doc[doc] folder of RuboCop's GitHub repo and is published to https://docs.rubocop.org.
+The manual is generated from the AsciiDoc files in the link:https://github.com/rubocop-hq/rubocop/tree/master/docs[docs] folder of RuboCop's GitHub repo and is published to https://docs.rubocop.org.
 link:https://antora.org[Antora] is used to convert the manual into HTML.
 The filesystem layout is described at https://docs.antora.org/antora/2.0/component-structure/.
 
@@ -77,7 +77,7 @@ NOTE: You'll need commit access to the repository for this to work.
 To check the generated site you can simply open `docs/index.html` in your favourite browser.
 
 If you want to make changes to the manual's page structure you'll have to edit
-link:https://github.com/rubocop-hq/rubocop/blob/master/doc/modules/ROOT/nav.adoc[nav.adoc].
+link:https://github.com/rubocop-hq/rubocop/blob/master/docs/modules/ROOT/nav.adoc[nav.adoc].
 
 == Funding