fix download-artifact inputs

Author: scareything

.github/workflows/publish-container-images.yml

@@ -35,7 +35,7 @@ jobs:
         with:
           pattern: linux-*
           path: ./downloads
-          merge_multiple: false  # some artifacts have the same name and so can not be aggregated in a single directory
+          merge-multiple: false  # some artifacts have the same name and so can not be aggregated in a single directory
 
       - name: Unpack CMake Artifacts
         shell: bash

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
         uses: actions/download-artifact@v5
         with:
           path: ${{ runner.workspace }}/downloads
-          merge_multiple: false  # some artifacts have the same name and so can not be aggregated in a single directory
+          merge-multiple: false  # some artifacts have the same name and so can not be aggregated in a single directory
 
       - name: List Release Artifacts
         run: ls -horRAS ${{runner.workspace}}/downloads/