Fix typo in packages_ref variable

Author: rem1776

.github/workflows/github_cmake_nvhpc.yml

@@ -26,7 +26,7 @@ jobs:
       with:
         buildcache: true
         spack_ref: releases/v1.1.1
-        paackages_ref: v2026.03.0
+        packages_ref: v2026.03.0
     - name: Set up custom build cache and build compiler
       run: |
         spack mirror add \