fix(action): typo

Its inputs not input T-T, why is this so annoying.

action.yml

@@ -38,12 +38,12 @@ runs:
         "$GITHUB_ACTION_PATH/create-report.sh"
     - name: Upload Artifact
       uses: https://code.forgejo.org/forgejo/upload-artifact@v4
-      if: input.generate-artifact
+      if: inputs.generate-artifact
       with:
         path: size-report.md
-        name: input.artifact-name
+        name: inputs.artifact-name
     - name: Upload Report
-      if: input.comment-on-pr
+      if: inputs.comment-on-pr
       run: |
         set -eu