Fix Formatter documentation.

The code samples for the various "hour of day" format specifiers
were wrong.

(cherry-pick of 68e6dc9cf2691e77d8fa0543ad670098bea68163.)

Bug: https://code.google.com/p/android/issues/detail?id=53983
Change-Id: I8db792dbf8a44ca951692620d15d243a7b033273
1 file changed