Move store docs to 'nix help-stores'

Why not 'nix help stores'? Well, 'nix help <arg>' already means 'show
help on the "arg" subcommand'.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/libstore/globals.hh b/src/libstore/globals.hh
index 93086eaf8..4382d1b85 100644
--- a/src/libstore/globals.hh
+++ b/src/libstore/globals.hh
@@ -97,7 +97,10 @@ public:
     Path nixDaemonSocketFile;
 
     Setting<std::string> storeUri{this, getEnv("NIX_REMOTE").value_or("auto"), "store",
-        "The default Nix store to use."};
+        R"(
+          The URL of the Nix store to use. See [`nix help-stores`](@docroot@/command-ref/new-cli/nix3-help-stores.md)
+          for supported store types and settings.
+        )"};
 
     Setting<bool> keepFailed{this, false, "keep-failed",
         "Whether to keep temporary directories of failed builds."};