Fix Sphinx currentmodule directive for location choice documentation #1124

Job	Run time
linux-64-py	5m 43s
Estimation Notebooks Test	53m 38s
win-64	11m 52s
random_seed_generation_test	3m 8s
Estimation Mode Unit Tests	25m 55s
Expression Profiling Tests	8m 15s
macOS	9m 56s
estimation_edb_creation_test	6m 46s
Standard 1-Zone Example (MTC)	23m 5s
Standard 2-Zone Example (SANDAG)	12m 12s
prototype_mtc_extended	1h 29m 40s
prototype_mtc	57m 44s
placeholder_psrc	58m 16s
prototype_sandag_xborder	5m 53s
placeholder_multiple_zone	11m 15s
prototype_mwcog	59m 6s
prototype_marin	2m 5s
production_semcog	6m 30s
develop-docbuild	0s
	7h 30m 59s

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