fix book example generation and inclusion #541

Job	Run time
Rustfmt	16s
Clippy	3m 28s
semver	1m 13s
Tests (windows-latest)	4m 2s
Build Book	1m 37s
Tests (macos-latest)	2m 55s
Tests (ubuntu-latest)	2m 25s
Build Wasm Examples (callback-example)	50s
Code Coverage	13s
Build Wasm Examples (basic)	1m 2s
Build Examples (basic_charts)	32s
Build Examples (financial_charts)	50s
Build Examples (kaleido)	2m 0s
Build Examples (custom_controls)	30s
Build Examples (3d_charts)	32s
Build Examples (scientific_charts)	27s
Build Examples (images)	39s
Build Examples (maps)	38s
Build Examples (shapes)	52s
Build Examples (subplots)	30s
Build Examples (ndarray)	53s
	26m 24s

Provide feedback