Fix invalid line counts

[AdonisCodes]

➜ Expectation failed: (tokens → [Tokenizer.Token(literal: "123", type: Tokenizer.TokenType.number, lineStart: 2, lineEnd: 2, start: 0, end: 4), Tokenizer.Token(literal: "456", type: Tokenizer.TokenType.number, lineStart: 3, lineEnd: 3, start: 5, end: 8)]) == (expectedOutputs → [Tokenizer.Token(literal: "123", type: Tokenizer.TokenType.number, lineStart: 2, lineEnd: 2, start: 1, end: 4), Tokenizer.Token(literal: "456", type: Tokenizer.TokenType.number, lineStart: 4, lineEnd: 4, start: 6, end: 9)])

Second output should start on line 4 not 3 as per the actual expected output. There might be some bug in the string logic where we don't increment the line number in some very specific cases.