Document format issues: characters are overlapping in the header of some tables

[Rui Hai Jiang]

Hello, 

I'm reading this document PostgreSQL 12.2 Documentation(postgresql-12-A4.pdf) 
which I've downloaded from the official website www.postgresql.org.


I found some format issues with the table headers in these pages,
1159,1160,1161,1162,1163,1164.

In the table headers, some characters are overlapping and it's difficult to 
recognize the words. 

Regards,
Ruihai