Use hi-res SVG logo (dmlc#8923)

hcho3 · web-flow · commit a2cdba51ce0c · 2023-03-15T10:02:38.000-07:00
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-<img src=https://raw.githubusercontent.com/dmlc/dmlc.github.io/master/img/logo-m/xgboost.png width=135/>  eXtreme Gradient Boosting
+<img src="https://xgboost.ai/images/logo/xgboost-logo.svg" width=135/>  eXtreme Gradient Boosting
 ===========
 [![Build Status](https://xgboost-ci.net/job/xgboost/job/master/badge/icon)](https://xgboost-ci.net/blue/organizations/jenkins/xgboost/activity)
 [![XGBoost-CI](https://github.com/dmlc/xgboost/workflows/XGBoost-CI/badge.svg?branch=master)](https://github.com/dmlc/xgboost/actions)

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-<img src=https://raw.githubusercontent.com/dmlc/dmlc.github.io/master/img/logo-m/xgboost.png width=135/> eXtreme Gradient Boosting`
	`1`	`+<img src="https://xgboost.ai/images/logo/xgboost-logo.svg" width=135/> eXtreme Gradient Boosting`
`2`	`2`	`===========`
`3`	`3`	`[![Build Status](https://xgboost-ci.net/job/xgboost/job/master/badge/icon)](https://xgboost-ci.net/blue/organizations/jenkins/xgboost/activity)`
`4`	`4`	`[![XGBoost-CI](https://github.com/dmlc/xgboost/workflows/XGBoost-CI/badge.svg?branch=master)](https://github.com/dmlc/xgboost/actions)`