Update README.md

README.md

@@ -77,13 +77,12 @@ python evaluate_connectivity.py <tested-generated-folder>
 
 ### Topologies generation
 
-- Start Ollama server (after installation)
-ollama serve
+- Start Ollama server (after installation) : ```bash
+ollama serve ```
 
 - Pull a model you plan to use (models are defined in models_configuration.py)
-ollama pull qwen3:32b
-ollama pull mistral-small:24b
-```
+```bash ollama pull qwen3:32b```
+```bash ollama pull mistral-small:24b```
 
 - The code expects the Ollama HTTP API to be reachable at `http://localhost:11434` (default).