Fix action lock threads fails

- Corrected the repo name.

Author: iamWing

.github/workflows/lock.yml

@@ -16,7 +16,7 @@ jobs:
   lock:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-thread@v3
+      - uses: dessant/lock-threads@v3
         with:
           github-token: ${{ github.token }}
           issue-inactive-days: '30'