add author

concepts/unpacking-and-multiple-assignment/.meta/config.json

@@ -1,5 +1,5 @@
 {
   "blurb": "Unpacking is the process of extracting individual elements of a collection, such as a list, tuple, or dictionary by iterating over them. Unpacked values can be assigned to variables within the same step. Multiple assignment is the ability to assign values to multiple variables in one line.",
-  "authors": ["meatball","bethanyg"],
+  "authors": ["meatball133","bethanyg"],
   "contributors": []
 }

exercises/concept/locomotive-engineer/.meta/config.json

@@ -1,7 +1,7 @@
 {
   "blurb": "Learn about unpacking and multiple assignment in Python while helping Linus with his train control system.",
   "icon": "tracks-on-tracks-on-tracks",
-  "authors": ["meatball","BethanyG"],
+  "authors": ["meatball133","BethanyG"],
   "files": {
     "solution": ["locomotive_engineer.py"],
     "test": ["locomotive_engineer_test.py"],