by downloading .vsix file from releases section (then in VS Code hit F1 → run >Extensions: Install from VSIX...)
If you need totally the same "screenshot-like" appearance and features like wiki links, notes graph, pdf export, etc, install Teamed with Kata extension pack instead and follow steps from it's description.
Create empty file named .kata and put it to your notes directory.
Open your notes directory from VS Code as a folder.
🔧 Extension Settings
This extension contributes the following VS Code settings:
kata.strikethruOnDone: If enabled all closed tasks will wrapped in ~~ so it will be ~~stroke~~ during rendering depending on theme. Enabled by default.