Update README.md

README.md

@@ -266,7 +266,7 @@ Feel free to update the list!
 - [Whonix](https://www.whonix.org/) - Whonix™ is software designed to preserve privacy and anonymity by helping users run applications anonymously. Whonix™ can be installed on Windows, macOS, Linux and Qubes. ([GitHub](https://github.com/Whonix))
 - [Qubes OS](https://www.qubes-os.org) - Qubes OS is a free and open-source, security-oriented operating system for single-user desktop computing. Qubes OS leverages Xen-based virtualization to allow for the creation and management of isolated compartments called qubes. ([GitHub](https://github.com/QubesOS))
 - [TAILS OS](https://tails.boum.org) - Tails is a portable operating system that protects your privacy and helps you avoid censorship. ([GitLab](https://gitlab.tails.boum.org/tails/tails))
-- [nix-bitcoin](https://nixbitcoin.org) - a collection of Nix packages and NixOS modules for easily installing full-featured Bitcoin nodes with an emphasis on security ([GitHub]https://github.com/fort-nix/nix-bitcoin)
+- [nix-bitcoin](https://nixbitcoin.org) - a collection of Nix packages and NixOS modules for easily installing full-featured Bitcoin nodes with an emphasis on security ([GitHub](https://github.com/fort-nix/nix-bitcoin))
 
 
 ## NFT