Update MerchantWindow javadoc

Author: NichtStudioCode

invui/src/main/java/xyz/xenondevs/invui/window/MerchantWindow.java

@@ -243,31 +243,31 @@ default Builder setAvailable(boolean available) {
     sealed interface Builder extends Window.Builder.Split<MerchantWindow, Builder> permits MerchantWindowImpl.BuilderImpl {
 
         /**
-         * Sets the result {@link Gui} of the {@link MerchantWindow}.
+         * Sets the 3x1 upper {@link Gui} of the {@link MerchantWindow}.
          *
-         * @param gui The result input {@link Gui} of the {@link MerchantWindow}
+         * @param gui The 3x1 upper {@link Gui} of the {@link MerchantWindow}
          * @return This {@link Builder}
          */
         default Builder setUpperGui(Gui gui) {
             return setUpperGui(() -> gui);
         }
 
         /**
-         * Sets the {@link Gui.Builder} for the result input {@link Gui} of this {@link Builder}.
+         * Sets the {@link Gui.Builder} for the 3x1 upper {@link Gui} of this {@link Builder}.
          * The {@link Gui.Builder} will be called every time a new {@link MerchantWindow} is created using this builder.
          *
-         * @param builder The {@link Gui.Builder} for the result input {@link Gui}
+         * @param builder The {@link Gui.Builder} for the 3x1 upper {@link Gui}
          * @return This {@link Builder}
          */
         default Builder setUpperGui(Gui.Builder<?, ?> builder) {
             return setUpperGui(builder::build);
         }
 
         /**
-         * Sets the {@link Gui} {@link Supplier} for the result input {@link Gui} of this {@link Builder}.
+         * Sets the {@link Gui} {@link Supplier} for the 3x1 upper {@link Gui} of this {@link Builder}.
          * The {@link Supplier} will be called every time a new {@link MerchantWindow} is created using this builder.
          *
-         * @param guiSupplier The {@link Gui} {@link Supplier} for the result input {@link Gui}
+         * @param guiSupplier The {@link Gui} {@link Supplier} for the 3x1 upper {@link Gui}
          * @return This {@link Builder}
          */
         Builder setUpperGui(Supplier<? extends Gui> guiSupplier);