ImageOverlay and SVGOverlay are not explained.

Change the VideoOverlay-Tutorial to following structure:

Rename the header.

Explain ImageOverlay

• The general explanaition can be used from VideoOverlay
• If know-how available add a sample how to use different sources
• Explain that the option interactive is per default false. This means that no mouse events are triggered. Can be changed with L.ImageOverlay(coords, {interactive: true})
• Sample with errorOverlayUrl option
• Explain that it is import for accessibility to add a alt option.

Explain VideoOverlay

• Check if the existing ImageOverlay sections are still relevant
• Explain the playInline option from 1.8. (Default true) On iPhone, Add playsInline attribute on the video element #7928
• Explain On some browsers autoplay will only work with muted: true

Explain SVGOverlay