[docs] Update link to mlr3-compliant interface in README (#4509)
[docs] Update link to mlr3-compliant interface in README (#4509)


henry0312/LightGBM,henry0312/LightGBM,henry0312/LightGBM,henry0312/LightGBM,microsoft/LightGBM,microsoft/LightGBM,microsoft/LightGBM,microsoft/LightGBM,microsoft/LightGBM,henry0312/LightGBM