[static-web] Properly pass variable name

[Andrea Veri <averi src gnome org>]

commit 9b32f23af9b6200399887c5625d97ca2d7d9f1e8
Author: Andrea Veri <averi redhat com>
Date:   Mon Jan 31 20:50:10 2022 +0100

    Properly pass variable name

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ea7c3d1..0264df1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,7 +19,7 @@ s3:
     - |
       curl --fail-with-body -s -o /dev/stdout -X POST \
       -H "Authorization: Bearer ${CDN_TOKEN}" \
-      "https://api.cdn77.com/v3/cdn/$CDN_RESOURCE_ID/job/purge-all";
+      "https://api.cdn77.com/v3/cdn/${CDN_RESOURCE_ID}/job/purge-all";
   only:
     refs:
       - master