fix: Fix a typo in the JointConsumer docstring (#9117)

Fixed a minor a typo in the docstring for the JointConsumer class

Author: moijes12

treeherder/services/pulse/consumers.py

@@ -222,7 +222,7 @@ def on_message(self, body, message):
 class JointConsumer(PulseConsumer):
     """
     Run a collection of consumers in parallel.  These may be connected to different
-    AMQP servers, and Kombu only supports communicating wiht one connection per
+    AMQP servers, and Kombu only supports communicating with one connection per
     thread, so we use multiple threads, one per consumer.
     """