Update: use same header practices across the file

Source: https://www.markdownguide.org/basic-syntax/#heading-best-practices

README.md

@@ -330,6 +330,7 @@
 - [CDisplayEx](https://cdisplayex.com/) - Lightweight comic book reader (.cbr, .cbz, .pdf, manga). 🪟
 
 ### Office Suites
+
 - [LibreOffice](https://libreoffice.org/) - Popular and easy to use office suite. 🪟 🍎 🐧 🟢 ⭐
 - [Apache OpenOffice](https://openoffice.org/) - Suite for documents, spreadsheets, etc. 🪟 🍎 🐧 🟢
 - [Calligra Suite](https://calligra.org/) - Office suite with word processing and vector graphics. 🪟 🍎 🐧
@@ -342,6 +343,7 @@
 
 
 ### E-book
+
 - [Calibre](https://calibre-ebook.com) - Powerful e-book manager. 🪟 🍎 🐧 [🟢](https://github.com/kovidgoyal/calibre) ⭐
 - [iChm](https://github.com/NSGod/ichm) - CHM reader. 🍎 [🟢](https://github.com/NSGod/ichm)
 - [Kindle App](https://amazon.com/l/16571048011) - Official Kindle reader app. 🪟 🍎
@@ -419,6 +421,7 @@
 - [Xtreme Download Manager (XDM)](https://xtremedownloadmanager.com/) - Powerful tool to increase download speed. 🪟 🍎 🐧 🟢 
 
 ## Games
+
 - [Steam](https://store.steampowered.com/) - Platform for buying and playing PC games. 🪟 🍎 🐧 ⭐
 - [Amazon Games](https://gaming.amazon.com/) - Platform for Prime Gaming titles. 🪟
 - [Battle.net](https://blizzard.com/en-us/apps/battle.net/desktop) - Platform for Blizzard games. 🪟 🍎