Update docs/architecture/adr-11-refactor-errors.md

Co-authored-by: Farhad Shabani <[email protected]>
Signed-off-by: Sean Chen <[email protected]>

docs/architecture/adr-11-refactor-errors.md

@@ -121,7 +121,7 @@ was then mapped *back* into a `ContextError`; certainly an inefficient round-tri
 that an error did occur in the `consensus_state` method, it would not have been clear to the
 user that the error originated from a host context.
 
-This `validate` function will now be changed to return a `ClientError`. Coupled with the 
+This `validate` function will now be changed to return a `ClientError`. Coupled with the
 `consensus_state` method now returning a `HostError`, this call can now be made much more
 cleanly: