Update min_element_index.md

snippets/min_element_index.md

@@ -8,10 +8,10 @@ Returns the index of the element with the minimum value in a list.
 - Use `min()` and `list.index()` to obtain the minimum value in the list and then return its index.
 
 ```py
-def min_element_index(array):
-  return array.index(min(array))
+def min_element_index(arr):
+  return arr.index(min(arr))
 ```
 
 ```py
 min_element_index([3, 5, 2, 6, 10, 7, 9]) # 2
-```
+```