doc: add DPS8M to LINKS.md (libuv#4052)

LINKS.md

@@ -6,7 +6,8 @@
 * [clearskies_core](https://github.com/larroy/clearskies_core): Clearskies file synchronization program. (C++11)
 * [CMake](https://cmake.org) open-source, cross-platform family of tools designed to build, test and package software
 * [Cocos-Engine](https://github.com/cocos/cocos-engine): The runtime framework for Cocos Creator editor.
-* [Coherence](https://github.com/liesware/coherence/): Cryptographic server for modern web apps. 
+* [Coherence](https://github.com/liesware/coherence/): Cryptographic server for modern web apps.
+* [DPS8M](https://dps8m.gitlab.io): GE ∕ Honeywell ∕ Bull DPS‑8/M and 6180/L68 mainframe simulator.
 * [DPS-For-IoT](https://github.com/intel/dps-for-iot/wiki): Fully distributed publish/subscribe protocol.
 * [HashLink](https://github.com/HaxeFoundation/hashlink): Haxe run-time with libuv support included.
 * [Haywire](https://github.com/kellabyte/Haywire): Asynchronous HTTP server.