Add docs about citing GATK (#8947) #4547

Job	Run time
Validate script WDLs using womtools	54s
build and push gatk docker to artifacts	16m 13s
check if the environment has privileges	1s
Validate generated WDLs using womtools	13m 38s
WDL test RUN_CNV_GERMLINE_COHORT_WDL on cromwell	24m 30s
WDL test RUN_CNV_GERMLINE_CASE_WDL on cromwell	25m 40s
WDL test RUN_CNV_SOMATIC_WDL on cromwell	24m 14s
WDL test RUN_M2_WDL on cromwell	17m 18s
WDL test RUN_VCF_SITE_LEVEL_FILTERING_WDL on cromwell	12m 20s
Java 17.0.6+10 build and test cloud	26m 27s
Java 17.0.6+10 build and test integration	32m 38s
Java 17.0.6+10 build and test unit	20m 49s
Java 17.0.6+10 test on docker integration	39m 8s
Java 17.0.6+10 test on docker unit	23m 0s
Java 17.0.6+10 test on docker variantcalling	32m 15s
Java 17.0.6+10 test on docker conda	28m 35s
	5h 37m 40s

Provide feedback