Fix typo in WebSettings javadoc.
Fix typo in WebSettings javadoc.

We accidentally repeated the same enum value twice; fixed to mention the
three values correctly.

Change-Id: Iba6a7edd8e1a5b429728056a8f56634427758c73

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