chore(config): add GitHub repository metadata to docs config

apps/docs/blume.config.ts

@@ -37,6 +37,10 @@ export default defineConfig({
   deployment: {
     site: "https://lc.prd.lk",
   },
+  github: {
+    owner: "prdlk",
+    repo: "leetcode",
+  },
   lastModified: "git",
   redirects,
   content: {