Draft: docs: standardize Geo terminology - consistent use of "primary node" and "secondary node"
Relates to issue #10554 (closed)
Changes
- Update Geo documentation to use consistent terminology
- Standardize references to "primary node" and "secondary node" throughout Geo docs
- Remove inconsistent usage of standalone "primary"/"secondary" terms where "node" should be included
- Ensure clarity for customers about what constitutes primary vs secondary Geo installations