tree dc98f3cd6046ebdd3ad1d5c430b1e22664702f62
parent 637bfa756ddba08bf5f67fc2d45124afd5dbc0bc
author lamber-ken <lamberken@apache.org> 1590560152 +0800
committer GitHub <noreply@github.com> 1590560152 +0200
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[CLEAN] remove duplicate property key in log4j.properties

### Motivation

1. Fix duplicate key in log4j.properties
2. `http` to `https` in `README`

### Changes

![image](https://user-images.githubusercontent.com/20113411/82162451-369ef880-98d7-11ea-9217-777721bba545.png)

![image](https://user-images.githubusercontent.com/20113411/82162816-d2c9ff00-98d9-11ea-967e-53646d351753.png)


Reviewers: Enrico Olivelli <eolivelli@gmail.com>

This closes #2334 from lamber-ken/clean-log