Changed regex for calculation of percent hemoglobin genes #435

Job	Run time
Build-environments (jupyter-book/introduction/analysis_tools.yml)	1m 32s
Build-environments (jupyter-book/preprocessing_visualization/preprocessing.yml)	4m 52s
Build-environments (jupyter-book/cellular_structure/clustering.yml)	1m 50s
Build-environments (jupyter-book/cellular_structure/annotation.yml)	4m 41s
Build-environments (jupyter-book/cellular_structure/integration.yml)	2m 57s
Build-environments (jupyter-book/conditions/compositional.yml)	4m 43s
Build-environments (jupyter-book/conditions/gsea_pathway.yml)	4m 34s
Build-environments (jupyter-book/conditions/perturbation_modeling.yml)	3m 50s
Build-environments (jupyter-book/conditions/differential_gene_expression.yml)	2m 45s
Build-environments (jupyter-book/trajectories/lineage_tracing.yml)	3m 0s
Build-environments (jupyter-book/trajectories/pseudotemporal.yml)	1m 30s
Build-environments (jupyter-book/mechanisms/cell_cell_communication.yml)	2m 53s
Build-environments (jupyter-book/spatial/spatial.yml)	4m 20s
Build-environments (jupyter-book/surface_protein/surface_protein.yml)	1m 30s
Build-environments (jupyter-book/multimodal_integration/paired_integration.yml)	8m 7s
Build-environments (jupyter-book/multimodal_integration/advanced_integration.yml)	7m 21s
	1h 0m 25s

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