[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

README.md

@@ -87,4 +87,3 @@ This repository makes use of the following published codes:
 <br>
 <img src="./images/paper/cover7.png" alt="cover7" style="width:400px;"/>
 <img src="./images/paper/cover8.png" alt="cover8" style="width:400px;"/>
-