anki: fix UI scale configuration

Use `numbers.between 1.0 2.0` for the UI scale type to match Anki's
actual behavior where ProfileManager.uiScale clamps values below 1.0
to 1.0.

docs/release-notes/rl-2605.md

@@ -7,6 +7,10 @@ section is therefore not final.
 
 This release has the following notable changes:
 
+- The [](#opt-programs.anki.uiScale) option now expects a value in the
+  range 1.0–2.0, previously it erroneously expected values in the
+  range `0.0–1.0`.
+
 ## State Version Changes {#sec-release-26.05-state-version-changes}
 
 The state version in this release includes the changes below. These
@@ -18,4 +22,3 @@ changes are only active if the `home.stateVersion` option is set to
 
 - The `programs.zsh.dotDir` option now defaults to the XDG configuration
   directory (usually `~/.config/zsh`) when `xdg.enable` is true.
-

modules/programs/anki/default.nix

@@ -82,7 +82,7 @@ in
     };
 
     uiScale = lib.mkOption {
-      type = with lib.types; nullOr (numbers.between 0.0 1.0);
+      type = with lib.types; nullOr (numbers.between 1.0 2.0);
       default = null;
       example = 1.0;
       description = "User interface scale.";