Fix typo in packages API within a group

doc/api/packages.md

@@ -61,7 +61,7 @@ GET /groups/:id/packages
 | `exclude_subgroups` | boolean | false | If the param is included as true, packages from projects from subgroups are not listed. Default is `false`. |
 
 ```bash
-curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/group/:id/packages?exclude_subgroups=true
+curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/:id/packages?exclude_subgroups=true
 ```
 
 Example response:

ee/lib/api/group_packages.rb

@@ -15,7 +15,7 @@ module API
       optional :exclude_subgroups, type: Boolean, default: false, desc: 'Determines if subgroups should be excluded'
     end
     resource :groups, requirements: API::NAMESPACE_OR_PROJECT_REQUIREMENTS do
-      desc 'Get all project packages' do
+      desc 'Get all project packages within a group' do
         detail 'This feature was introduced in GitLab 12.5'
         success EE::API::Entities::Package
       end