fix: mark @htmldocs/render as private to prevent npm publish failure

Co-authored-by: dportillo-ixs <[email protected]>

Author: Copilot

packages/render/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@htmldocs/render",
   "version": "0.3.0",
-  "private": false,
+  "private": true,
   "main": "./dist/index.js",
   "module": "./dist/index.js",
   "types": "./dist/index.d.ts",