build: update  publish and docs scripts (#190)
build: update  publish and docs scripts (#190)

* chore: update cloud rad kokoro build job

Delete `SharePoint` item from TOC.

Source-Author: F. Hinkelmann <bfca2660d8321d14063d908366d26ce6f4981952@gmail.com>
Source-Date: Tue Aug 11 11:25:41 2020 -0400
Source-Repo: googleapis/synthtool
Source-Sha: bd0deaa1113b588d70449535ab9cbf0f2bd0e72f
Source-Link: https://github.com/googleapis/synthtool/commit/bd0deaa1113b588d70449535ab9cbf0f2bd0e72f

* build: perform publish using Node 12

Source-Author: Benjamin E. Coe <69440dae14aaa9fe2429b324bfce03449d09e1db@google.com>
Source-Date: Wed Aug 12 12:12:29 2020 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 5747555f7620113d9a2078a48f4c047a99d31b3e
Source-Link: https://github.com/googleapis/synthtool/commit/5747555f7620113d9a2078a48f4c047a99d31b3e

Co-authored-by: Benjamin E. Coe <69440dae14aaa9fe2429b324bfce03449d09e1db@google.com>
googleapis/google-cloud-node,googleapis/google-cloud-node,googleapis/google-cloud-node,googleapis/google-cloud-node