Update CHANGELOG.md

Co-authored-by: Kris Nuttycombe <[email protected]>

CHANGELOG.md

@@ -12,7 +12,7 @@ and this library adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 New API implemented that allows clients to change the `mainnet` endpoint. Use `func switchTo(endpoint: LightWalletEndpoint) async throws`. 
 Possible errors:
 - `ZcashError.synchronizerServerSwitch`: endpoint fails, check the address, port and format address:port,
-- Some `ZcashError` related to `synchronizer.Start()`: the switch calls `start()` at the end and that is the only throwing function except the validation.
+- Switching endpoints causes a call to `synchronizer.Start()`, which may throw a `ZcashError`.
 
 ## Changed