Clean up readme, and default config

src/api/main.py

@@ -144,7 +144,7 @@ class HandbookExampleRequest(BaseModel):
 
 @app.get("/handbook/catalog/{language}")
 def get_handbook_catalog_endpoint(language: str):
-    """Returns W3Schools-style syntax handbook catalog (functions & subjects) for specified language."""
+    """Returns syntax handbook catalog (functions & subjects) for specified language."""
     catalog = handbook_service.get_catalog(language)
     return {"language": language, "catalog": catalog}