Document IsWarningMessageReadyForControl (#1306)

just added real name and description of what it does

Author: freedy69

HUD/IsWarningMessageActive_2.md

@@ -0,0 +1,13 @@
+---
+ns: HUD
+aliases: ["0xAF42195A42C63BBA", "_IS_WARNING_MESSAGE_ACTIVE_2"]
+---
+## IS_WARNING_MESSAGE_READY_FOR_CONTROL
+
+```c
+// 0xAF42195A42C63BBA
+BOOL IS_WARNING_MESSAGE_READY_FOR_CONTROL();
+```
+
+## Return value
+Returns if the warning message scaleform/ui movie is loaded and ready to be controlled.