fixed sed command

.gitea/workflows/modlist.yaml

@@ -15,9 +15,9 @@ jobs:
       - name: "truncate readme"
         shell: bash
         run: |
-          sed -i 's/MODS.*/MODS/' README.md
+          sed -i 's/MODS:.*//' README.md
           cat README.md
-          echo "<br />" >> README.md
+          echo "MODS:<br />" >> README.md
           echo "$(ls --format=single-column *.jar | sed 's/$/<br \/>/')" >> README.md
           cat README.md
           git config user.name "${{ vars.WORKFLOW_USERNAME }}"