Minor edit of comments

mycroft/audio/services/__init__.py

@@ -21,7 +21,7 @@ class AudioBackend:
 
         Args:
             config: configuration dict for the instance
-            bus:    mycroft messagebus emitter
+            bus:    Mycroft messagebus emitter
     """
     __metaclass__ = ABCMeta
 
@@ -118,7 +118,7 @@ class AudioBackend:
     @abstractmethod
     def seek_forward(self, seconds=1):
         """
-        skip X seconds
+            Skip X seconds
 
             Args:
                 seconds (int): number of seconds to seek, if negative rewind
@@ -128,7 +128,7 @@ class AudioBackend:
     @abstractmethod
     def seek_backward(self, seconds=1):
         """
-        rewind X seconds
+            Rewind X seconds
 
             Args:
                 seconds (int): number of seconds to seek, if negative rewind
@@ -148,14 +148,13 @@ class AudioBackend:
         return ret
 
     def shutdown(self):
-        """ perform clean shutdown """
+        """ Perform clean shutdown """
         self.stop()
 
 
 class RemoteAudioBackend(AudioBackend):
-    """ Class used to identify remote audio backends.
+    """ Base class for remote audio backends.
 
         These may be things like Chromecasts, mopidy servers, etc.
-
     """
     pass