chore(ci): add test workflow badge to README

Author: lzwjava

.github/workflows/test.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Verify JAVA_HOME
         run: |
           echo "JAVA_HOME is set to: $JAVA_HOME"
-          
+
       # Run Maven tests
       - name: Run Maven Tests
         # This command will execute your project's tests.

README.md

@@ -1,8 +1,7 @@
 # Algorithm Problem Solutions
 
 [![Compile](https://github.com/lzwjava/algorithm-solutions/actions/workflows/maven.yml/badge.svg)](https://github.com/lzwjava/algorithm-solutions/actions/workflows/maven.yml)
-
-
+[![Test](https://github.com/lzwjava/algorithm-solutions/actions/workflows/test.yml/badge.svg)](https://github.com/lzwjava/algorithm-solutions/actions/workflows/test.yml)
 
 Problem solutions of some algorithm problems from online judge platforms.