Change detail text in last example of 43.5.3. Executing a Command with a Single-Row Result

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/16/plpgsql-statements.html
Description:

The last example in the chapter uses a named parameter "username". As a
result, the detail message should use "username" instead of "$1" to match
the runtime behaviour.

I suggest to change this line

DETAIL:  parameters: $1 = 'nosuchuser'

to 

DETAIL:  parameters: username = 'nosuchuser'