[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

adaptive/runner.py

@@ -726,7 +726,7 @@ def block_until_done(self) -> None:
         if in_ipynb():
             raise RuntimeError(
                 "Cannot block the event loop when running in a Jupyter notebook."
-            " Use `await runner.task` instead."
+                " Use `await runner.task` instead."
             )
         self.ioloop.run_until_complete(self.task)