Fix signals

docs/signals.md

@@ -106,7 +106,7 @@ class AlbumAuditor:
 auditor = AlbumAuditor()
 pre_save(Album)(auditor.before_save)
 # call above has same result like the one below
-Album.Meta.signals.pre_save.connect(auditor.before_save)
+Album.ormar_config.signals.pre_save.connect(auditor.before_save)
 # signals are also exposed on instance
 album = Album(name='Miami')
 album.signals.pre_save.connect(auditor.before_save)
@@ -127,7 +127,7 @@ async def before_update(sender, instance, **kwargs):
         instance.is_best_seller = True
 
 # disconnect given function from signal for given Model
-Album.Meta.signals.pre_save.disconnect(before_save)
+Album.ormar_config.signals.pre_save.disconnect(before_save)
 # signals are also exposed on instance
 album = Album(name='Miami')
 album.signals.pre_save.disconnect(before_save)
@@ -266,8 +266,8 @@ class Album(ormar.Model):
     is_best_seller: bool = ormar.Boolean(default=False)
     play_count: int = ormar.Integer(default=0)
 
-Album.Meta.signals.your_custom_signal = ormar.Signal()
-Album.Meta.signals.your_custom_signal.connect(your_receiver_name)
+Album.ormar_config.signals.your_custom_signal = ormar.Signal()
+Album.ormar_config.signals.your_custom_signal.connect(your_receiver_name)
 ```
 
 Actually under the hood signal is a `SignalEmitter` instance that keeps a dictionary of know signals, and allows you
@@ -276,20 +276,20 @@ to access them as attributes. When you try to access a signal that does not exis
 So example above can be simplified to. The `Signal` will be created for you.
 
 ```
-Album.Meta.signals.your_custom_signal.connect(your_receiver_name)
+Album.ormar_config.signals.your_custom_signal.connect(your_receiver_name)
 ```
 
 Now to trigger this signal you need to call send method of the Signal.
 
 ```python
-await Album.Meta.signals.your_custom_signal.send(sender=Album)
+await Album.ormar_config.signals.your_custom_signal.send(sender=Album)
 ```
 
 Note that sender is the only required parameter and it should be ormar Model class.
 
 Additional parameters have to be passed as keyword arguments.
 
 ```python
-await Album.Meta.signals.your_custom_signal.send(sender=Album, my_param=True)
+await Album.ormar_config.signals.your_custom_signal.send(sender=Album, my_param=True)
 ```