Update FindMin.py (TheAlgorithms#601)

Fixed indentation error.

Author: gpapadok

Maths/FindMin.py

@@ -4,7 +4,7 @@ def findMin(x):
         for i in x:
             if minNum > i:
                 minNum = i
-            return minNum
+        return minNum
 
     print(findMin([0,1,2,3,4,5,-3,24,-56])) # = -56