Docs: Updating NFC and QR provisioning information

Add
"It can also be used for QR code provisioning."

To all of the following: EXTRA_PROVISIONING_DEVICE_ADMIN_MINIMUM_VERSION_CODE
EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_CHECKSUM
EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_COOKIE_HEADER
EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION
EXTRA_PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM
EXTRA_PROVISIONING_WIFI_HIDDEN
EXTRA_PROVISIONING_WIFI_PAC_URL
EXTRA_PROVISIONING_WIFI_PASSWORD
EXTRA_PROVISIONING_WIFI_PROXY_BYPASS
EXTRA_PROVISIONING_WIFI_PROXY_HOST
EXTRA_PROVISIONING_WIFI_PROXY_PORT
EXTRA_PROVISIONING_WIFI_SECURITY_TYPE
EXTRA_PROVISIONING_WIFI_SSID

And the lines - 
"Use in an NFC record with MIME_TYPE_PROVISIONING_NFC that starts device owner provisioning via an NFC bump. It can also be used for QR code provisioning."

to the following:

EXTRA_PROVISIONING_LOCALE
EXTRA_PROVISIONING_LOCAL_TIME
EXTRA_PROVISIONING_TIME_ZONE

Bug: 67573007
Change-Id: I97cfa9a600e7954741dedd3f46303ed27e4e1a3e
Test: Built docs with [go/abtd]