fix error

Author: kuboon

test/test_backtrace.rb

@@ -5,6 +5,6 @@
 class TestSolidErrors < Minitest::Test
   def test_backtrace
     backtrace = SolidErrors::Backtrace.parse(caller(0)).to_a
-    assert_equal backtrace[0][:method], "TestSolidErrors#test_backtrace"
+    assert_includes backtrace[0][:method], "test_backtrace"
   end
 end