Duplicate paragraph

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/13/sql-syntax-lexical.html
Description:

Greetings

I was going through the documentation of the SQL Language that you have
provided and there is a possible duplicate paragraph that I noticed in
section 4.1 - Lexical Syntax
(https://www.postgresql.org/docs/current/sql-syntax-lexical.html).

In section 4.1.1 (Identifiers and Key Words), there is a paragraph
explaining a variant of quoted identifier that allows Unicode characters.
All content in the paragraph, right up to the end of section 4.1.1, is
almost copied word-by-word in section 4.1.2.3 - String Constants With
Unicode Escapes. 

I wasn't able to judge if this was intentional or not, so I ended up writing
this.