[skip ci] fixed broken links to documentation site

Author: damianlegawiec

.github/CONTRIBUTING.md

@@ -1 +1 @@
-Please visit [Contributing section](https://dev-docs.spreecommerce.org/contributing/index) of Spree Guides. Thank you!
+Please visit [Contributing section](https://docs.spreecommerce.org/developer/contributing/quickstart) of Spree Guides. Thank you!

README.md

@@ -37,19 +37,19 @@ Default credentials:
 
 ## Installation
 
-Spree Admin Dashboard is bundled with [Spree Starter](https://github.com/spree/spree_starter) and we recommend following [Spree Getting Started guide](https://dev-docs.spreecommerce.org/getting-started/installation).
+Spree Admin Dashboard is bundled with [Spree Starter](https://github.com/spree/spree_starter) and we recommend following [Spree Getting Started guide](https://docs.spreecommerce.org/getting-started/installation).
 
-You can also [add Spree and Admin Dashboard to an existing Ruby on Rails application](https://dev-docs.spreecommerce.org/advanced/existing_app_tutorial) as well.
+You can also [add Spree and Admin Dashboard to an existing Ruby on Rails application](https://docs.spreecommerce.org/advanced/existing_app_tutorial) as well.
 
 ## Documentation
 
-* [Developer Documentation](https://dev-docs.spreecommerce.org/)
+* [Developer Documentation](https://docs.spreecommerce.org/)
 
 ## Contributing
 
 Spree Admin Dashboard is an open source project and we love contributions in any form - pull requests, issues, feature ideas!
 
-Please review the [Spree Contributing Guide](https://dev-docs.spreecommerce.org/contributing/index)
+Please review the [Spree Contributing Guide](https://docs.spreecommerce.org/developer/contributing/quickstart)
 
 ### Local setup
 

SECURITY.md

@@ -1 +1 @@
-Please see [Spree Guides Security section](https://dev-docs.spreecommerce.org/security/index).
+Please see [Spree Guides Security section](https://docs.spreecommerce.org/developer/security/quickstart).

app/views/spree/admin/oauth_applications/index.html.erb

@@ -9,7 +9,7 @@
   <div class="card bg-light">
     <div class="card-body">
       <%=Spree.t('admin.oauth_applications.documentation_message')%>
-      <%= link_to(Spree.t('admin.oauth_applications.documentation_cta'), 'https://dev-docs.spreecommerce.org/api/platform-api/authenticating-requests')%>
+      <%= link_to(Spree.t('admin.oauth_applications.documentation_cta'), 'https://docs.spreecommerce.org/api-reference/platform/authentication')%>
     </div>
   </div>
 

app/views/spree/admin/shared/_account_nav.html.erb

@@ -49,7 +49,7 @@
           <%= Spree.t(:join_slack) %>
         <% end %>
 
-        <%= link_to 'https://dev-docs.spreecommerce.org/extensions/extensions', target: :blank, class: 'd-block py-2 px-4 my-1 dropdown-item' do %>
+        <%= link_to 'https://docs.spreecommerce.org/developer/extending-spree/3rd-party-extensions', target: :blank, class: 'd-block py-2 px-4 my-1 dropdown-item' do %>
         <%= svg_icon name: "extensions.svg", width: '18', height: '18' %>
           &nbsp;
           <%= Spree.t(:extensions_directory) %>

spree_backend.gemspec

@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.metadata = {
     "bug_tracker_uri"   => "https://github.com/spree/spree_backend/issues",
     "changelog_uri"     => "https://github.com/spree/spree_backend/releases/tag/v#{s.version}",
-    "documentation_uri" => "https://dev-docs.spreecommerce.org/",
+    "documentation_uri" => "https://docs.spreecommerce.org/",
     "source_code_uri"   => "https://github.com/spree/spree_backend/tree/v#{s.version}",
   }