can't handle multiple raw code block

[Kitamado]

the following test code fails: (this is minimal test to reproduce this bug...)

#eval runTest
  (title := "multiple raw code blocks")
  [
    "/-",
    "```lean",
    "/-- greeting -/",
    "def foo := \"Hello World!\"",
    "```",
    "",
    "```lean",
    "/-! ### second code block -/",
    "",
    "def one := 1",
    "```",
    "-/",
  ]
  [
    "```lean",
    "/-- greeting -/",
    "def foo := \"Hello World!\"",
    "```",
    "",
    "```lean",
    "/-! ### second code block -/",
    "",
    "def one := 1",
    "```",
  ]