wrong pgn in the chessopenings dataset

[agricolamz]

Hi, found a list of wrong pgns in CRAN version:

• in row 40, A40
• in row 180, B69
• in row 191, B78
• in row 402, D49
• in row 422, D68
• in row 423, D69
• in row 445, D89

Then I checked your github version and I see that you fixed all of them except the first one, that is still

1...e5 (Englund Gambit), 1...b5 (Polish Defence), 1...Nc6 (Nimzowitsch Defence), 1...g6 (Modern Defence without 2. e4), 1...e6 (French Indian Defence).