sfeos

update ES env variable documentation #1223

Job	Run time
Python 3.9 testing with opensearch	1m 54s
Python 3.9 testing with elasticsearch7	1m 57s
Python 3.10 testing with elasticsearch7	1m 55s
Python 3.9 testing with elasticsearch8	1m 59s
Python 3.10 testing with opensearch	1m 52s
Python 3.11 testing with elasticsearch7	2m 18s
Python 3.11 testing with opensearch	2m 22s
Python 3.10 testing with elasticsearch8	1m 56s
Python 3.11 testing with elasticsearch8	2m 11s
Python 3.12 testing with elasticsearch7	1m 53s
Python 3.12 testing with opensearch	1m 57s
Python 3.13 testing with opensearch	1m 59s
Python 3.13 testing with elasticsearch7	1m 50s
Python 3.12 testing with elasticsearch8	1m 53s
Python 3.13 testing with elasticsearch8	1m 53s
	29m 49s

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