Fix Ollama model env var in documentation (#3156)

Signed-off-by: Dina Suehiro Jones <dina.s.jones@intel.com>

Author: dmsuehir

python/samples/getting_started/agents/ollama/README.md

@@ -40,8 +40,8 @@ Set the following environment variables:
 - `OLLAMA_HOST`: The base URL for your Ollama server (optional, defaults to `http://localhost:11434`)
   - Example: `export OLLAMA_HOST="http://localhost:11434"`
 
-- `OLLAMA_CHAT_MODEL_ID`: The model name to use
-  - Example: `export OLLAMA_CHAT_MODEL_ID="qwen2.5:8b"`
+- `OLLAMA_MODEL_ID`: The model name to use
+  - Example: `export OLLAMA_MODEL_ID="qwen2.5:8b"`
   - Must be a model you have pulled with Ollama
 
 ### For OpenAI Client with Ollama (`ollama_with_openai_chat_client.py`)

python/samples/getting_started/agents/ollama/ollama_agent_basic.py

@@ -12,7 +12,7 @@
 
 Ensure to install Ollama and have a model running locally before running the sample
 Not all Models support function calling, to test function calling try llama3.2 or qwen3:4b
-Set the model to use via the OLLAMA_CHAT_MODEL_ID environment variable or modify the code below.
+Set the model to use via the OLLAMA_MODEL_ID environment variable or modify the code below.
 https://ollama.com/
 
 """

python/samples/getting_started/agents/ollama/ollama_agent_reasoning.py

@@ -12,7 +12,7 @@
 
 Ensure to install Ollama and have a model running locally before running the sample
 Not all Models support reasoning, to test reasoning try qwen3:8b
-Set the model to use via the OLLAMA_CHAT_MODEL_ID environment variable or modify the code below.
+Set the model to use via the OLLAMA_MODEL_ID environment variable or modify the code below.
 https://ollama.com/
 
 """

python/samples/getting_started/agents/ollama/ollama_chat_client.py

@@ -12,7 +12,7 @@
 
 Ensure to install Ollama and have a model running locally before running the sample.
 Not all Models support function calling, to test function calling try llama3.2
-Set the model to use via the OLLAMA_CHAT_MODEL_ID environment variable or modify the code below.
+Set the model to use via the OLLAMA_MODEL_ID environment variable or modify the code below.
 https://ollama.com/
 
 """

python/samples/getting_started/agents/ollama/ollama_chat_multimodal.py

@@ -12,7 +12,7 @@
 
 Ensure to install Ollama and have a model running locally before running the sample
 Not all Models support multimodal input, to test multimodal input try gemma3:4b
-Set the model to use via the OLLAMA_CHAT_MODEL_ID environment variable or modify the code below.
+Set the model to use via the OLLAMA_MODEL_ID environment variable or modify the code below.
 https://ollama.com/
 
 """

python/samples/getting_started/chat_client/README.md

@@ -35,6 +35,6 @@ Depending on which client you're using, set the appropriate environment variable
 
 **For Ollama client:**
 - `OLLAMA_HOST`: Your Ollama server URL (defaults to `http://localhost:11434` if not set)
-- `OLLAMA_CHAT_MODEL_ID`: The Ollama model to use for chat (e.g., `llama3.2`, `llama2`, `codellama`)
+- `OLLAMA_MODEL_ID`: The Ollama model to use for chat (e.g., `llama3.2`, `llama2`, `codellama`)
 
 > **Note**: For Ollama, ensure you have Ollama installed and running locally with at least one model downloaded. Visit [https://ollama.com/](https://ollama.com/) for installation instructions.