change dir and small fixes

getting-started/automatic-prompt-optimization/getting_started.ipynb

@@ -360,7 +360,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -386,7 +386,6 @@
     "\n",
     "# Model configuration\n",
     "model:\n",
-    "  name: \"openrouter/meta-llama/llama-3.3-70b-instruct\"\n",
     "  task_model: \"openrouter/meta-llama/llama-3.3-70b-instruct\"\n",
     "  proposer_model: \"openrouter/meta-llama/llama-3.3-70b-instruct\"\n",
     "\n",