Space before unit symbol

From "SI Unit rules and style conventions":
https://physics.nist.gov/cuu/Units/checklist.html

	There is a space between the numerical value and unit symbol,
	even when the value is used in an adjectival sense, except in
	the case of superscript units for plane angle.

Author: DimitriPapadopoulos

src/zarr/core/sync.py

@@ -133,7 +133,7 @@ def sync(
 
     finished, unfinished = wait([future], return_when=asyncio.ALL_COMPLETED, timeout=timeout)
     if len(unfinished) > 0:
-        raise TimeoutError(f"Coroutine {coro} failed to finish in within {timeout}s")
+        raise TimeoutError(f"Coroutine {coro} failed to finish in within {timeout} s")
     assert len(finished) == 1
     return_result = next(iter(finished)).result()
 

src/zarr/storage/logging.py

@@ -91,7 +91,7 @@ def log(self, hint: Any = "") -> Generator[None, None, None]:
             yield
         finally:
             end_time = time.time()
-            self.logger.info("Finished %s [%.2fs]", op, end_time - start_time)
+            self.logger.info("Finished %s [%.2f s]", op, end_time - start_time)
 
     @property
     def supports_writes(self) -> bool: