diff --git a/by-topic.md b/by-topic.md
index a78629d..d9a1a6a 100644
--- a/by-topic.md
+++ b/by-topic.md
@@ -2146,7 +2146,7 @@
 - [cydrobolt/polr](https://github.com/cydrobolt/polr) - :aerial_tramway: A modern, powerful, and robust URL shortener
 - [LibreCat/Catmandu](https://github.com/LibreCat/Catmandu) - Catmandu - a data processing toolkit
 - [jacobwb/hashover-next](https://github.com/jacobwb/hashover-next) - This branch will be HashOver 2.0
-- [mledoze/countries](https://github.com/mledoze/countries) - World countries in JSON, CSV, XML and Yaml. Any help is welcome!
+- [mledoze/countries](https://github.com/mledoze/countries) - World countries in JSON, YAML, CSV and XML. Any help is welcome!
 - [circlecell/jsonlint.com](https://github.com/circlecell/jsonlint.com) - [OLD] Please go to new source, link below.
 - [OParl/spec](https://github.com/OParl/spec) - Spezifikation für eine offene Schnittstelle für Ratsinformationssysteme
 
@@ -4306,7 +4306,7 @@
 - [api-platform/api-platform](https://github.com/api-platform/api-platform) - 🕸️ Create REST and GraphQL APIs, scaffold Jamstack webapps, stream changes in real-time.
 - [phpmetrics/PhpMetrics](https://github.com/phpmetrics/PhpMetrics) - Beautiful and understandable static analysis tool for PHP
 - [froxlor/Froxlor](https://github.com/froxlor/Froxlor) - The server administration software for your needs - The official Froxlor development Git repository
-- [mledoze/countries](https://github.com/mledoze/countries) - World countries in JSON, CSV, XML and Yaml. Any help is welcome!
+- [mledoze/countries](https://github.com/mledoze/countries) - World countries in JSON, YAML, CSV and XML. Any help is welcome!
 - [PHPMailer/PHPMailer](https://github.com/PHPMailer/PHPMailer) - The classic email sending library for PHP
 - [YOURLS/YOURLS](https://github.com/YOURLS/YOURLS) - 🔗 The 𝘥𝘦 𝘧𝘢𝘤𝘵𝘰 standard, self hosted, powerful and customizable, URL shortener in PHP
 - [paragonie/random_compat](https://github.com/paragonie/random_compat) - PHP 5.x support for random_bytes() and random_int()
@@ -5392,7 +5392,7 @@
 - [dino/dino](https://github.com/dino/dino) - Modern XMPP ("Jabber") Chat Client using GTK/Vala
 - [substance/substance](https://github.com/substance/substance) - A JavaScript library for web-based content editing.
 - [jacobwb/hashover-next](https://github.com/jacobwb/hashover-next) - This branch will be HashOver 2.0
-- [mledoze/countries](https://github.com/mledoze/countries) - World countries in JSON, CSV, XML and Yaml. Any help is welcome!
+- [mledoze/countries](https://github.com/mledoze/countries) - World countries in JSON, YAML, CSV and XML. Any help is welcome!
 
 ## zsh