I recommend something like Obsidian instead which is a markdown editor (newly upgraded) along with an entire knowledge base and note taking system that can create and maintain references across files.
MarkText is free and open source (MIT License) while Obsidian is closed source, which is an important distinction for some users.
Some of the other alternatives mentioned here, like Zettlr[1] and Dendron,[2] would be more suitable for users who prefer to handle their Markdown documents and notes with FOSS.
trilium is another good one. https://github.com/zadam/trilium