Merge branch 'fix-error-doc-generic-packages-repository' into 'master'

Fix doc/header for "download package" with project access token

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/176701



Merged-by: Phillip Wells <pwells@gitlab.com>
Approved-by: Phillip Wells <pwells@gitlab.com>
Co-authored-by: Virgil FRADET <vfradet@jes.fr>

doc/user/packages/generic_packages/index.md

@@ -292,7 +292,7 @@ curl --user "<username>:<access_token>" \
 With HTTP headers:
 
 ```shell
-curl --header "PROJECT-TOKEN: <project_access_token>" \
+curl --header "PRIVATE-TOKEN: <project_access_token>" \
      --location \
      "https://gitlab.example.com/api/v4/projects/1/packages/generic/my_package/0.0.1/file.txt" \
      --output file.txt