Update describepdf/config.py

describepdf/config.py

@@ -64,8 +64,8 @@ def load_env_config() -> Dict[str, Any]:
     loaded_config = DEFAULT_CONFIG.copy()
     
     # Override defaults with environment variables if present
-    if os.getenv("OPENROUTER_API_KEY"):
-        loaded_config["openrouter_api_key"] = os.getenv("OPENROUTER_API_KEY")
+    if os.environ.getenv("OPENROUTER_API_KEY"):
+        loaded_config["openrouter_api_key"] = os.environ.getenv("OPENROUTER_API_KEY")
         
     if os.getenv("DEFAULT_OR_VLM_MODEL"):
         loaded_config["or_vlm_model"] = os.getenv("DEFAULT_OR_VLM_MODEL")