Fix javadoc in DeviceAdminService

Change-Id: Ic0c54fdc49f391b1553ba836360e9380b15d1647
diff --git a/core/api/src/main/java/org/onosproject/net/device/DeviceAdminService.java b/core/api/src/main/java/org/onosproject/net/device/DeviceAdminService.java
index c2f70eb..195ef9b 100644
--- a/core/api/src/main/java/org/onosproject/net/device/DeviceAdminService.java
+++ b/core/api/src/main/java/org/onosproject/net/device/DeviceAdminService.java
@@ -32,13 +32,12 @@
 
     // TODO: add ability to administratively suspend/resume device
 
-
-  /**
-   * Administratively enables or disables a port on a device.
-   *
-   * @param deviceId  device identifier
-   * @param portNumber port identifier
-   * @param enable true if port is to be enabled, false to disable
-   */
+    /**
+     * Administratively enables or disables a port on a device.
+     *
+     * @param deviceId  device identifier
+     * @param portNumber port identifier
+     * @param enable true if port is to be enabled, false to disable
+     */
     void changePortState(DeviceId deviceId, PortNumber portNumber, boolean enable);
 }