Added postgres extension to various README files (#359)

* Update README.md

* Update README.zh-CN.md

* Update README.ru.md

* Update README.id-ID.md

* Update README.ru.md

* Update README.id-ID.md

* Update README.md

* Update README.ru.md

* Update README.zh-CN.md

Author: spa5k

README.id-ID.md

@@ -393,6 +393,7 @@ Nano ID telah bermigrasi ke berbagai macam bahasa. Seluruh versi dapat digunakan
 - [Perl](https://github.com/tkzwtks/Nanoid-perl)
 - [PHP](https://github.com/hidehalo/nanoid-php)
 - [Python](https://github.com/puyuan/py-nanoid) with [dictionaries](https://pypi.org/project/nanoid-dictionary)
+- [Postgres Extension](https://github.com/spa5k/uids-postgres)
 - [R](https://github.com/hrbrmstr/nanoid) (with dictionaries)
 - [Ruby](https://github.com/radeno/nanoid.rb)
 - [Rust](https://github.com/nikolay-govorov/nanoid)

README.md

@@ -512,6 +512,7 @@ the same ID generator on the client and server side.
 * [PHP](https://github.com/hidehalo/nanoid-php)
 * [Python](https://github.com/puyuan/py-nanoid)
   with [dictionaries](https://pypi.org/project/nanoid-dictionary)
+* [Postgres Extension](https://github.com/spa5k/uids-postgres)
 * [R](https://github.com/hrbrmstr/nanoid) (with dictionaries)
 * [Ruby](https://github.com/radeno/nanoid.rb)
 * [Rust](https://github.com/nikolay-govorov/nanoid)

README.ru.md

@@ -497,11 +497,12 @@ Nano ID был портирован на множество языков. Это
 - [PHP](https://github.com/hidehalo/nanoid-php)
 - [Python](https://github.com/puyuan/py-nanoid)
   со [словарями](https://pypi.org/project/nanoid-dictionary)
+- [Postgres Extension](https://github.com/spa5k/uids-postgres)
 - [R](https://github.com/hrbrmstr/nanoid) (со словарями)
 - [Ruby](https://github.com/radeno/nanoid.rb)
 - [Rust](https://github.com/nikolay-govorov/nanoid)
 - [Swift](https://github.com/antiflasher/NanoID)
-* [Unison](https://share.unison-lang.org/latest/namespaces/hojberg/nanoid)
+- [Unison](https://share.unison-lang.org/latest/namespaces/hojberg/nanoid)
 - [V](https://github.com/invipal/nanoid)
 - [Zig](https://github.com/SasLuca/zig-nanoid)
 

README.zh-CN.md

@@ -475,6 +475,7 @@ Nano ID 已被移植到许多语言。 你可以使用下面这些移植，获
 * [PHP](https://github.com/hidehalo/nanoid-php)
 * [Python](https://github.com/puyuan/py-nanoid)
   with [dictionaries](https://pypi.org/project/nanoid-dictionary)
+* [Postgres Extension](https://github.com/spa5k/uids-postgres)
 * [R](https://github.com/hrbrmstr/nanoid) (with dictionaries)
 * [Ruby](https://github.com/radeno/nanoid.rb)
 * [Rust](https://github.com/nikolay-govorov/nanoid)