docs: update model reference from Granite Code to Granite language model

Signed-off-by: BJ Hargrave <hargrave@us.ibm.com>

Author: bjhargrave

recipes/RAG/RAG_with_Langchain.ipynb

@@ -164,7 +164,7 @@
     "### Choose your LLM\n",
     "The LLM will be used for answering the question, given the retrieved text.\n",
     "\n",
-    "Select a Granite Code model from the [`ibm-granite`](https://replicate.com/ibm-granite) org on Replicate. Here we use the Replicate Langchain client to connect to the model.\n",
+    "Select a Granite language model from the [`ibm-granite`](https://replicate.com/ibm-granite) org on Replicate. Here we use the Replicate Langchain client to connect to the model.\n",
     "\n",
     "To connect to a model on a provider other than Replicate, substitute this code cell with one from the [LLM component recipe](https://github.com/ibm-granite-community/granite-kitchen/blob/main/recipes/Components/Langchain_LLMs.ipynb)."
    ]