Apply suggestion to test/test_soi.py

test/test_soi.py

@@ -208,7 +208,7 @@ class TestSOI(unittest.TestCase):
         """Test that 4 test modules are packed as we expect them to be.
 
         Only the algorithms "MaxRectsBl" and "GuillotineBssfSas" are tested.
-        This is becaues if these two work, we can assume other choices of
+        This is because if these two work, we can assume other choices of
         algorithm will work as well. The modules in the SOI have been chosen
         such that these two algorithms should yield different packings.