Fix checkstyle violation

Author: Rongmario

src/main/java/org/spongepowered/asm/service/MixinServiceAbstract.java

@@ -199,8 +199,9 @@ protected final void getContainersFromAgents(Builder<IContainerHandle> list) {
     }
 
     /**
-     * @see org.spongepowered.asm.service.IMixinService#getSideName()
      * CHANGED BY CLEANROOM: stripped final away, allowing overriding
+     *
+     * @see org.spongepowered.asm.service.IMixinService#getSideName()
      */
     @Override
     public String getSideName() {