Currently page headings and example headings have text like "line-and-scatter-plot": <img width="1246" height="626" alt="Image" src="https://github.com/user-attachments/assets/cd7f70b0-40f2-4a07-a8e5-35baf99d22a7" /> But these should be like our existing headings, eg: "Line and Scatter Plot" <img width="961" height="654" alt="Image" src="https://github.com/user-attachments/assets/4e2d24a7-ce6c-4981-a24a-ae4bd246b99f" />