Incorrect method name in BigQuery async example [Documentation Issue]

[georgegiovanni]

Page Name: bigquery-usage
Release: 0.18.1

In order to execute an async job the docs say the following:

Then, begin executing the job on the server:
>>> job.submit()  # API call
>>> job.created

Executing this code results in:
AttributeError: 'QueryJob' object has no attribute 'submit'

The correct method name is begin() not submit().

[tseaver]

@georgegiovanni Thanks for the report!