`estimate_document_count` -> `estimated_document_count`
`estimate_document_count` -> `estimated_document_count`

Testing done: ran script without any failures

shankari/e-mission-server,shankari/e-mission-server,e-mission/e-mission-server,shankari/e-mission-server,e-mission/e-mission-server,e-mission/e-mission-server,shankari/e-mission-server,e-mission/e-mission-server