Fix doc typos in Vibrator.java
Fix doc typos in Vibrator.java

Change-Id: Ie95cd7fa16042897e6acf94badec98bc19bde57a

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base