Fixes project registry anchor links

Conan headers were changed on ffdd21c7, so we just need to updated them
on project registry documentation

doc/user/packages/workflows/project_registry.md

@@ -74,7 +74,7 @@ Now you can [deploy Maven packages](../maven_repository/index.md#uploading-packa
 
 #### Conan
 
-For Conan, first you need to add GitLab as a Conan registry remote. Follow the instructions in the [GitLab Conan Repository docs](../conan_repository/index.md#setting-the-conan-remote-to-the-gitlab-package-registry)
+For Conan, first you need to add GitLab as a Conan registry remote. Follow the instructions in the [GitLab Conan Repository docs](../conan_repository/index.md#adding-the-gitlab-package-registry-as-a-conan-remote)
 to do so. Then, create your package using the plus-separated (`+`) project path as your Conan user. For example,
 if your project is located at `https://gitlab.com/foo/bar/my-proj`, then you can [create your Conan package](../conan_repository/index.md)
 using `conan create . foo+bar+my-proj/channel`, where `channel` is your package channel (`stable`, `beta`, etc.). Once your package