Update README.md

README.md

@@ -47,7 +47,7 @@ You can add Harmony to your Flake inputs as follows:
 Then, in your outputs, bring Harmony into a package install list as `harmony.packages.<system>.harmony`.
 
 Harmony builds are cached in Cachix so you can take advantage of those builds by
-adding `gh-harmony.cachix.org` to the list of `substituters` and
+adding `https://gh-harmony.cachix.org` to the list of `substituters` and
 `gh-harmony.cachix.org-1:KX5tTtEt3Y6an8pywe3Cy6jR9bUo+1Cl7hJmh+5eI4I=` to the
 list of `trusted-public-keys`.