Update the specification for the following operations

 - RANDOM_MULTINOMIAL
 - L2_NORMALIZATION

Bug: 136279892
Bug: 140177375
Test: mm
Change-Id: Iab38ef29ebf6d1f5c0a408436b3d564e45e537a0
Merged-In: Iab38ef29ebf6d1f5c0a408436b3d564e45e537a0
(cherry picked from commit 077c0339d4fdf289794ee9c401f490e8793d46ca)
4 files changed