refactor(endpoints): rename usage_report parameter to usage_page
Aligns zmk_endpoints_send_report function declaration with its definition.
PR:
@@ -18,4 +18,4 @@ int zmk_endpoints_select(enum zmk_endpoint endpoint);
int zmk_endpoints_toggle();
enum zmk_endpoint zmk_endpoints_selected();
-int zmk_endpoints_send_report(uint8_t usage_report);
+int zmk_endpoints_send_report(uint8_t usage_page);
