[docs] fix inaccurate comment for force_col_wise param with CUDA version

[StrikerRUS]

With CUDA, force_row_wise is used.

LightGBM/src/io/config.cpp

Lines 410 to 413 in d2b4e73

	} else if (device_type == std::string("cuda")) {
	// force row-wise for cuda version
	force_col_wise = false;
	force_row_wise = true;

[jameslamb]

thank you for fixing this! I'll handle re-running Azure DevOps.