CT-987 prepare docs for external buckets

[tomasfejfar]

Jira issue(s): N/A

Changes:

• make it easier to understand

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[tomasfejfar]

@romanbracinik tohle nestačí?

[romanbracinik]

@romanbracinik tohle nestačí?

tak ono som tam pridal este tu hlasku u BQ `Cloud Storage external tables In case the registered dataset contains some external tables, you need to add access to the target project to the source data in GCS. There are two ways:

Assign the storage.buckets.get permission to the project email sapi-9752@261928107051.iam.gserviceaccount.com for the entire source GCS bucket. Assign the storage.objects.get permission to the project email sapi-9752@261928107051.iam.gserviceaccount.com for each object in the source GCS bucket, that serves as the source of the external table.` a treba nagrantovat prava aj tomu filu z ktoreho je ta externa tabulka tak mi prislo fajn to tam spomenut.

[romanbracinik]

@tomasfejfar ale kludne to pak upravim, len ma napadlo ze napisem ked to este nieje mergnute.

[tomasfejfar]

Jo, tím pádem je to potřeba celé prescreenshotovat :( Ufff. Tak to bych nechal asi na další iteraci ještě.

BTW: Dobře se to screenshotovalo tak, že jsem tomu .dialog nastavil padding 40px a pak udělal node screenshot.