Add an error message if you use code.world instead of code.world/haskell

[codeworld-feedback]

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Program: https://code.world/#PG8_Vt6jYftYv5xgwuWGdqw

Comment:

this no work for me plese thanks.

Message:

program.hs:25:47-48: error:
    • Missing punctuation before this expression.
      Perhaps you forgot a comma, an operator, or a bracket.
    • To multiply, please use the * operator.
      For example: circleSolid * 10
    • To apply a function, add parentheses around the argument.
      For example: circleSolid(10)