Update assingment_4.md

assignments/assingment_4.md

@@ -134,11 +134,11 @@ ________________________________________________________
 
 
 ## Areas covered:
-- MQQT operation
+- MQTT operation
 
 ## Description:
 For the above (task 2) given sample 
 
-1. push a sucessful notification to the MQQT for every 5th successful record with "good" 
+1. push a sucessful notification to the MQTT for every 5th successful record with "good" 
 2. Save stats (sum, average, latest timepoint) of all above 5 records in a redis seprate Redis DB
 3. An API to fetch the above saved data from redis