fix(pom): normalize formatting with xmllint (4-space indent)

Author: loong10k

pom.xml

@@ -55,7 +55,6 @@
         <maven-jacoco-plugin.version>0.8.15</maven-jacoco-plugin.version>
         <maven-javadoc-plugin.version>3.11.2</maven-javadoc-plugin.version>
         <maven-source-plugin.version>3.4.0</maven-source-plugin.version>
-    
     </properties>
     <!-- 依赖版本统一管理（dependencyManagement） -->
     <dependencyManagement>
@@ -165,7 +164,7 @@
                     <artifactId>maven-compiler-plugin</artifactId>
                     <version>${maven-compiler-plugin.version}</version>
                     <configuration>
-                                        </configuration>
+                                                                                </configuration>
                 </plugin>
             </plugins>
         </pluginManagement>