docs: fix typescript errors

docs/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "target": "esnext",
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "allowSyntheticDefaultImports": true
+  },
+  "include": ["src/.vitepress/config.mts", "package.json"]
+}