fixup! Ignore PermissionError when checking cwd during import

Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>

Doc/reference/import.rst

@@ -871,7 +871,7 @@ module.
 
 The current working directory -- denoted by an empty string -- is handled
 slightly differently from other entries on :data:`sys.path`. First, if the
-current working directory cannot be determined or is found to not exist, no
+current working directory cannot be determined or is found not to exist, no
 value is stored in :data:`sys.path_importer_cache`. Second, the value for the
 current working directory is looked up fresh for each module lookup. Third,
 the path used for :data:`sys.path_importer_cache` and returned by