fix: corrects typo in variable name

Author: colin-nolan

postgresql_watcher/watcher.py

@@ -83,7 +83,7 @@ def _create_subscription_process(
         self._cleanup_connections_and_processes()
 
         self.parent_conn, self.child_conn = Pipe()
-        self.subscription_proces = Process(
+        self.subscription_process = Process(
             target=casbin_channel_subscription,
             args=(
                 self.child_conn,
@@ -109,9 +109,9 @@ def start(
         self,
         timeout=20, # seconds
     ):
-        if not self.subscription_proces.is_alive():
+        if not self.subscription_process.is_alive():
             # Start listening to messages
-            self.subscription_proces.start()
+            self.subscription_process.start()
             # And wait for the Process to be ready to listen for updates
             # from PostgreSQL
             timeout_time = time() + timeout

tests/test_postgresql_watcher.py

@@ -50,7 +50,7 @@ def test_pg_watcher_init(self):
             assert isinstance(pg_watcher.parent_conn, connection.PipeConnection)
         else:
             assert isinstance(pg_watcher.parent_conn, connection.Connection)
-        assert isinstance(pg_watcher.subscription_proces, context.Process)
+        assert isinstance(pg_watcher.subscription_process, context.Process)
 
     def test_update_single_pg_watcher(self):
         pg_watcher = get_watcher("test_update_single_pg_watcher")