Update README.md

README.md

@@ -54,7 +54,7 @@ https://meeting.tencent.com/s/q6ikkyuYG1iD
 | Data | Time | Place   | Reporter|
 | ---  | ---  | --- | --- |
 | 4.15 | 2.30 PM | 6420 | Shao-Jiang Wang |
-## Title: *Statistical inference with normalized flow for BBHs in O1/O2*
+## Title: *Chameleon dark energy*
 ## Reporter:  Shao-Jiang Wang
 ## Abstract
 I will first review the current status of the Hubble tension and then introduce our chameleon dark energy model as a resolution to the Hubble tension.