fixed QoS level brief explaination

Author: 2bndy5

adafruit_minimqtt/adafruit_minimqtt.py

@@ -204,8 +204,8 @@ def will_set(self, topic=None, payload=None, qos=0, retain=False):
         :param int,float,str payload: Last will disconnection payload.
             payloads of type int & float are converted to a string.
         :param int qos: Quality of Service level, defaults to
-            zero. Conventional options are ``0`` (send at least once), ``1``
-            (send at most once), or ``2`` (send exactly once).
+            zero. Conventional options are ``0`` (send at most once), ``1``
+            (send at least once), or ``2`` (send exactly once).
 
             .. note:: Only options ``1`` or ``0`` are QoS levels supported by this library.
         :param bool retain: Specifies if the payload is to be retained when
@@ -418,8 +418,8 @@ def publish(self, topic, msg, retain=False, qos=0):
         :param str,int,float msg: Data to send to the broker.
         :param bool retain: Whether the message is saved by the broker.
         :param int qos: Quality of Service level for the message, defaults to
-            zero. Conventional options are ``0`` (send at least once), ``1``
-            (send at most once), or ``2`` (send exactly once).
+            zero. Conventional options are ``0`` (send at most once), ``1``
+            (send at least once), or ``2`` (send exactly once).
 
             .. note:: Only options ``1`` or ``0`` are QoS levels supported by this library.
 
@@ -524,8 +524,8 @@ def subscribe(self, topic, qos=0):
             element should be a tuple containing a topic identifier string and
             qos level integer.
         :param int qos: Quality of Service level for the topic, defaults to
-            zero. Conventional options are ``0`` (send at least once), ``1``
-            (send at most once), or ``2`` (send exactly once).
+            zero. Conventional options are ``0`` (send at most once), ``1``
+            (send at least once), or ``2`` (send exactly once).
 
             .. note:: Only options ``1`` or ``0`` are QoS levels supported by this library.