DRIVERS-2045 Make the description of TopologyDescription.servers consistent with the spec tests. (#1722)

Author: matthewdale

source/server-discovery-and-monitoring/server-discovery-and-monitoring.md

@@ -204,7 +204,7 @@ Fields:
     (`electionId`, `setVersion`) tuple.
 - `maxSetVersion`: an integer or null. The largest setVersion ever reported by a primary. It may not monotonically
     increase, as electionId takes precedence in ordering Default null. Part of the (`electionId`, `setVersion`) tuple.
-- `servers`: a set of ServerDescription instances. Default contains one server: "localhost:27017", ServerType Unknown.
+- `servers`: a set of ServerDescription instances, one for each of the servers in the topology.
 - `stale`: a boolean for single-threaded clients, whether the topology must be re-scanned. (Not related to
     maxStalenessSeconds, nor to stale primaries.)
 - `compatible`: a boolean. False if any server's wire protocol version range is incompatible with the client's. Default
@@ -1921,6 +1921,8 @@ oversaw the specification process.
 
 ## Changelog
 
+- 2024-11-04: Make the description of `TopologyDescription.servers` consistent with the spec tests.
+
 - 2024-08-16: Updated host b wire versions in `too_new` and `too_old` tests
 
 - 2024-08-09: Updated wire versions in tests to 4.0+.