Slight clarification of LED/RGB Matrix custom effect docs (#23897)

docs/features/led_matrix.md

@@ -300,18 +300,11 @@ These modes introduce additional logic that can increase firmware size.
 
 ## Custom LED Matrix Effects {#custom-led-matrix-effects}
 
-By setting `LED_MATRIX_CUSTOM_USER` (and/or `LED_MATRIX_CUSTOM_KB`) in `rules.mk`, new effects can be defined directly from userspace, without having to edit any QMK core files.
+By setting `LED_MATRIX_CUSTOM_USER = yes` in `rules.mk`, new effects can be defined directly from your keymap or userspace, without having to edit any QMK core files. To declare new effects, create a `led_matrix_user.inc` file in the user keymap directory or userspace folder.
 
-To declare new effects, create a new `led_matrix_user/kb.inc` that looks something like this:
-
-`led_matrix_user.inc` should go in the root of the keymap directory.
-`led_matrix_kb.inc` should go in the root of the keyboard directory.
-
-To use custom effects in your code, simply prepend `LED_MATRIX_CUSTOM_` to the effect name specified in `LED_MATRIX_EFFECT()`. For example, an effect declared as `LED_MATRIX_EFFECT(my_cool_effect)` would be referenced with:
-
-```c
-led_matrix_mode(led_MATRIX_CUSTOM_my_cool_effect);
-```
+::: tip
+Hardware maintainers who want to limit custom effects to a specific keyboard can create a `led_matrix_kb.inc` file in the root of the keyboard directory, and add `LED_MATRIX_CUSTOM_KB = yes` to the keyboard level `rules.mk`.
+:::
 
 ```c
 // !!! DO NOT ADD #pragma once !!! //
@@ -356,6 +349,12 @@ static bool my_cool_effect2(effect_params_t* params) {
 #endif // LED_MATRIX_CUSTOM_EFFECT_IMPLS
 ```
 
+To switch to your custom effect programmatically, simply call `led_matrix_mode()` and prepend `LED_MATRIX_CUSTOM_` to the effect name your specified in `LED_MATRIX_EFFECT()`. For example, an effect declared as `LED_MATRIX_EFFECT(my_cool_effect)` would be referenced with:
+
+```c
+led_matrix_mode(LED_MATRIX_CUSTOM_my_cool_effect);
+```
+
 For inspiration and examples, check out the built-in effects under `quantum/led_matrix/animations/`.
 
 

docs/features/rgb_matrix.md

@@ -807,12 +807,6 @@ By setting `RGB_MATRIX_CUSTOM_USER = yes` in `rules.mk`, new effects can be defi
 Hardware maintainers who want to limit custom effects to a specific keyboard can create a `rgb_matrix_kb.inc` file in the root of the keyboard directory, and add `RGB_MATRIX_CUSTOM_KB = yes` to the keyboard level `rules.mk`.
 :::
 
-To use custom effects in your code, simply prepend `RGB_MATRIX_CUSTOM_` to the effect name specified in `RGB_MATRIX_EFFECT()`. For example, an effect declared as `RGB_MATRIX_EFFECT(my_cool_effect)` would be referenced with:
-
-```c
-rgb_matrix_mode(RGB_MATRIX_CUSTOM_my_cool_effect);
-```
-
 ```c
 // !!! DO NOT ADD #pragma once !!! //
 
@@ -856,6 +850,12 @@ static bool my_cool_effect2(effect_params_t* params) {
 #endif // RGB_MATRIX_CUSTOM_EFFECT_IMPLS
 ```
 
+To switch to your custom effect programmatically, simply call `rgb_matrix_mode()` and prepend `RGB_MATRIX_CUSTOM_` to the effect name you specified in `RGB_MATRIX_EFFECT()`. For example, an effect declared as `RGB_MATRIX_EFFECT(my_cool_effect)` would be referenced with:
+
+```c
+rgb_matrix_mode(RGB_MATRIX_CUSTOM_my_cool_effect);
+```
+
 For inspiration and examples, check out the built-in effects under `quantum/rgb_matrix/animations/`.