Use 'macOS' consistently across content (#6521)

src/data/roadmaps/devops/content/vim--nano---emacs@Jt8BmtLUH6fHT2pGKoJs3.md

@@ -4,7 +4,7 @@ Editors are tools that allow you to create or edit files on your file system.
 
 ## Vim
 
-Vim is a highly configurable text editor built to make creating and changing any kind of text very efficient. It is included as "vi" with most UNIX systems and with Apple OS X.
+Vim is a highly configurable text editor built to make creating and changing any kind of text very efficient. It is included as "vi" with most UNIX systems and with macOS X.
 
 Vim ships with `vimtutor` that is a tutor designed to describe enough of the Vim commands that you will be able to easily use Vim as an all-purpose editor.
 

src/data/roadmaps/ios/content/memory-management@tqbg8mBJfjuXacdMlIB_L.md

@@ -1,6 +1,6 @@
 # Memory Management
 
-Memory management involves allocating memory for objects and freeing it after use. Manual Retain-Release (MRR) requires developers to explicitly manage memory using reference counting, provided by the Foundation class NSObject. Automatic Reference Counting (ARC) automates this process by inserting memory management method calls during compilation, though it still uses reference counting. In contrast, Garbage Collection (GC) automatically tracks object ownership and releases unreferenced objects, using a different mechanism than MRR and ARC, and is supported only in the Mac OS X runtime environment, not on iOS.
+Memory management involves allocating memory for objects and freeing it after use. Manual Retain-Release (MRR) requires developers to explicitly manage memory using reference counting, provided by the Foundation class NSObject. Automatic Reference Counting (ARC) automates this process by inserting memory management method calls during compilation, though it still uses reference counting. In contrast, Garbage Collection (GC) automatically tracks object ownership and releases unreferenced objects, using a different mechanism than MRR and ARC, and is supported only in the macOS X runtime environment, not on iOS.
 
 > Beginning May 1, 2015, new Mac apps and app updates submitted to the Mac App Store may no longer use garbage collection, which was deprecated in OS X Mountain Lion. Instead, migrate your apps to Automatic Reference Counting, using the migration assistant in Xcode to help with this transition. Apps may continue to use retain/release for manual memory management. For more information, read the [Transitioning to ARC Release Notes](https://developer.apple.com/library/ios/releasenotes/ObjectiveC/RN-TransitioningToARC/Introduction/Introduction.html).
 

src/data/roadmaps/nodejs/content/history-of-nodejs@Vrcv5px-3fqmyJnQv3WBK.md

@@ -1,6 +1,6 @@
 # History of Node.js
 
-Node.js was written initially by Ryan Dahl in 2009, about thirteen years after the introduction of the first server-side JavaScript environment, Netscape's LiveWire Pro Web. The initial release supported only Linux and Mac OS X. Its development and maintenance were led by Dahl and later sponsored by Joyent.
+Node.js was written initially by Ryan Dahl in 2009, about thirteen years after the introduction of the first server-side JavaScript environment, Netscape's LiveWire Pro Web. The initial release supported only Linux and macOS X. Its development and maintenance were led by Dahl and later sponsored by Joyent.
 
 Visit the following resources to learn more:
 

src/data/roadmaps/server-side-game-developer/content/mysql@HsBqd08Ro0VJnx0FlumMQ.md

@@ -1,3 +1,3 @@
 # MySQL
 
-MySQL is an open-source relational database management system (RDBMS) that uses SQL (Structured Query Language) to interact with data. It is developed, marketed, and supported by MySQL AB, a Swedish company, and is written in C and C++. Since it's open-source, you can use MySQL completely free of charge. MySQL is primarily used for online transactions and for consolidating data. You can install it on various platforms like Linux, Windows, Mac OS and so on. With its comprehensive set of features like support for full-text search, cursors, triggers, stored procedures, it is powerful enough to manage even very large sets of data, making it suitable for a vast range of applications, whether they be web-based or embedded.
+MySQL is an open-source relational database management system (RDBMS) that uses SQL (Structured Query Language) to interact with data. It is developed, marketed, and supported by MySQL AB, a Swedish company, and is written in C and C++. Since it's open-source, you can use MySQL completely free of charge. MySQL is primarily used for online transactions and for consolidating data. You can install it on various platforms like Linux, Windows, macOS and so on. With its comprehensive set of features like support for full-text search, cursors, triggers, stored procedures, it is powerful enough to manage even very large sets of data, making it suitable for a vast range of applications, whether they be web-based or embedded.