Fix link to 20B

Co-authored-by: sergiopaniego <sergiopaniegoblanco@gmail.com>

Author: pcuenca

articles/gpt-oss/run-colab.ipynb

@@ -17,7 +17,7 @@
       "source": [
         "# Run OpenAI gpt-oss 20B in a FREE Google Colab\n",
         "\n",
-        "OpenAI released `gpt-oss` [120B](https://hf.co/openai/gpt-oss-120b) and [20B](https://hf.co/openai/gpt-oss-120b). Both models are Apache 2.0 licensed.\n",
+        "OpenAI released `gpt-oss` [120B](https://hf.co/openai/gpt-oss-120b) and [20B](https://hf.co/openai/gpt-oss-20b). Both models are Apache 2.0 licensed.\n",
         "\n",
         "Specifically, `gpt-oss-20b` was made for lower latency and local or specialized use cases (21B parameters with 3.6B active parameters).\n",
         "\n",