Inconsistent attribute name in `=data` block example: `:id` vs `:key`

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Inconsistent attribute name in =data block example: :id vs :key

Where

Specification, lines 1850–1862

Problem

The code example on line 1850 uses :key<Logo>:

=begin data :key<Logo> :filename<Logo.png> :mime-type<image/png>

The description on line 1862 refers to the same block as having :id:

In the example above, we have a =data block with :id Logo that stores the base64-encoded image data.

This contradicts the earlier definition (line 1775):

Each =data block can be given a :key option, to name it.

Fix

Line 1862: replace C<:id> with C<:key>.