fix typo

src/determinist/evaluator.hpp

@@ -155,7 +155,7 @@ namespace evalhyd
         //     shape: ({1+, ...}, 1)
         // \require quad_obs:
         //     Quadratic errors between observations and mean observation.
-        //     shape: ({1+, ...}, time)
+        //     shape: ({1, ...}, time)
         // \require quad_prd:
         //     Quadratic errors between predictions and mean prediction.
         //     shape: ({1+, ...}, time)