Fixed Google Colab link and runtime error

topic/machine-learning/llm-langchain/README.md

@@ -69,7 +69,7 @@ and [CrateDB].
   [document_loader.py](document_loader.py), and
   [conversational_memory.py](conversational_memory.py).
 
-- `cratedb_rag_customer_support_langchain.ipynb` [![Open on GitHub](https://img.shields.io/badge/Open%20on-GitHub-lightgray?logo=GitHub)](cratedb_rag_customer_support_langchain.ipynb)[![Open in Colab](https://colab.research.google.com/github/crate/cratedb-examples/blob/main/topic/machine-learning/llm-langchain/cratedb_rag_customer_support_langchain.ipynb)
+- `cratedb_rag_customer_support_langchain.ipynb` [![Open on GitHub](https://img.shields.io/badge/Open%20on-GitHub-lightgray?logo=GitHub)](cratedb_rag_customer_support_langchain.ipynb)[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/crate/cratedb-examples/blob/main/topic/machine-learning/llm-langchain/cratedb_rag_customer_support_langchain.ipynb)
 
   This example illustrates the RAG implementation of a customer support scenario.
   The dataset used in this example is based on a collection of customer support interactions 

topic/machine-learning/llm-langchain/cratedb_rag_customer_support.ipynb

@@ -47,7 +47,10 @@
    },
    "outputs": [],
    "source": [
-    "!pip install -r requirements.txt"
+    "#!pip install -r requirements.txt\n",
+    "\n",
+    "#Note: If you are running in an environment like Google Colab, please use the absolute path of the requirements:\n",
+    "#!pip install -r https://raw.githubusercontent.com/crate/cratedb-examples/main/topic/machine-learning/llm-langchain/requirements.txt\""
    ]
   },
   {
@@ -155,7 +158,7 @@
    },
    "outputs": [],
    "source": [
-    "embeddings = OpenAIEmbeddings(deployment='my-embedding-model', chunk_size=1)\n",
+    "embeddings = OpenAIEmbeddings(deployment='my-embedding-model', chunk_size=200)\n",
     "pages_embeddings = embeddings.embed_documents(pages_text)"
    ]
   },

topic/machine-learning/llm-langchain/cratedb_rag_customer_support_langchain.ipynb

@@ -83,7 +83,10 @@
    },
    "outputs": [],
    "source": [
-    "!pip install -r requirements.txt"
+    "#!pip install -r requirements.txt\n",
+    "\n",
+    "#Note: If you are running in an environment like Google Colab, please use the absolute path of the requirements:\n",
+    "#!pip install -r https://raw.githubusercontent.com/crate/cratedb-examples/main/topic/machine-learning/llm-langchain/requirements.txt\""
    ]
   },
   {