Fix markdown-link-check config file path

Author: webpro

.github/workflows/markdown-link-check.yml

@@ -15,6 +15,6 @@ jobs:
       - uses: actions/checkout@master
       - uses: gaurav-nelson/github-action-markdown-link-check@v1
         with:
-          config-file: "./markdown-link-check.json"
+          config-file: ".github/workflows/markdown-link-check.json"
           use-quiet-mode: "yes"
           use-verbose-mode: "yes"