[json-glib/docs-template] ci: Use the right path for the docs archive

[Emmanuele Bassi <ebassi src gnome org>]

commit e20a4f9ea5d28e314b14f263fecd9e35afbc090a
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Aug 25 19:24:27 2021 +0100

    ci: Use the right path for the docs archive
    
    We are exploding the tarball from within the "public" directory.

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index bb07e59..5d0b19a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -84,7 +84,7 @@ pages:
   needs: ['reference']
   script:
     - mkdir public && cd public
-    - tar xf ${CI_PROJECT_NAME}-docs.tar
+    - tar xf ../${CI_PROJECT_NAME}-docs.tar
   artifacts:
     paths:
       - public