Add installation and launch instructions for mitmproxy in blog post

Author: d-oit

content/en/blog/2025-05-13-log-llm-api-post-from-roo-code.md

@@ -52,11 +52,13 @@ If you already run a corporate or custom proxy (e.g. Fiddler, Charles, mitmproxy
 When you need more power—filter rules, scripting, advanced TLS features—mitmproxy is the go-to:
 
 - **Install:**
+
   ```bash
   pip install mitmproxy
   ```
 
 - **Launch:**
+
   ```bash
   mitmproxy --mode regular --listen-port 8987
   ```