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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Personally, since links in Markdown format can be a bit cumbersome to write, I also recommend installing the Paste URL into selection plugin—it lets you create links in your notes (and Kanban boards) by selecting the piece of text you want to turn into a link then just pressing Ctrl + V (with the URL or path to a local file already copied in your clipboard, of course).
A quick introduction first: Obsidian (https://obsidian.md/) is a very lightweight note-taking/knowledge base creation tool. All notes are saved in Markdown format (just a text file with an .md extension).