chore: simplify registerChain

main/guides/orchestration/getting-started/key-concepts.md

@@ -98,9 +98,7 @@ and use of chain and connection information using the following APIs:
 
 ### Registration APIs
 
-- `registerChain` register a new chain with `chainHub`. The name will override a name in well-known chain names. If a
-  durable zone was not provided, registration will not survive a reincarnation of the vat, and will have to be
-  registered again.
+- `registerChain` register a new chain with `chainHub`. The name will override a name in well-known chain names.
 - `registerConnection` registers a connections between two given chain IDs.
 - `registerAsset` registers an asset that may be held on a chain other than the issuing chain. Both corresponding chains
   should already be registered before this call.