For 3
@example blocks, the 'text/html' representation of the resulting
object is above the threshold (example_size_threshold: 8192 bytes).
- 1 blocks had 'image/png' fallback image representation available, using that.
On pages: rigid_body.md
- 2 blocks had 'image/svg+xml' fallback image representation available, using that.
On pages: abc_flow.md, linear_wave.md