Related Issue(s):

• n/a

Description:

• add alt tag to header image
• correctly format package table (previously missing start and end pipes
• general wordsmithing
• update backends list
  • fix name of elasticsearch-opensearch backend
  • add mongodb, geoparquet, duckdb
  • add note that sqlalchemy is abandoned
• remove reference to installing sqlalchemy backend
• add link to releasing doc

PR Checklist:

• pre-commit hooks pass locally
• Tests pass (run make test)
• Documentation has been updated to reflect changes, if applicable, and docs build successfully (run make docs)
• [] Changes are added to the CHANGELOG.