Document SceneTreeTimer being freed automatically when elapsed
Document SceneTreeTimer being freed automatically when elapsed

The note was present in the SceneTree `create_timer()` class
documentation, but not in the SceneTreeTimer class documentation.

vkbsb/godot,sanikoyes/godot,vkbsb/godot,firefly2442/godot,akien-mga/godot,vnen/godot,Faless/godot,godotengine/godot,josempans/godot,sanikoyes/godot,Shockblast/godot,Shockblast/godot,Shockblast/godot,guilhermefelipecgs/godot,akien-mga/godot,Valentactive/godot,akien-mga/godot,Valentactive/godot,Zylann/godot,ZuBsPaCe/godot,Shockblast/godot,Shockblast/godot,firefly2442/godot,josempans/godot,vkbsb/godot,BastiaanOlij/godot,firefly2442/godot,godotengine/godot,guilhermefelipecgs/godot,Valentactive/godot,guilhermefelipecgs/godot,godotengine/godot,godotengine/godot,akien-mga/godot,guilhermefelipecgs/godot,firefly2442/godot,vkbsb/godot,akien-mga/godot,vnen/godot,sanikoyes/godot,akien-mga/godot,Shockblast/godot,vnen/godot,Zylann/godot,guilhermefelipecgs/godot,Faless/godot,firefly2442/godot,vkbsb/godot,guilhermefelipecgs/godot,ZuBsPaCe/godot,josempans/godot,BastiaanOlij/godot,godotengine/godot,Valentactive/godot,vkbsb/godot,Faless/godot,pkowal1982/godot,firefly2442/godot,pkowal1982/godot,ZuBsPaCe/godot,josempans/godot,guilhermefelipecgs/godot,ZuBsPaCe/godot,Valentactive/godot,sanikoyes/godot,Valentactive/godot,Faless/godot,BastiaanOlij/godot,pkowal1982/godot,pkowal1982/godot,Zylann/godot,BastiaanOlij/godot,firefly2442/godot,godotengine/godot,josempans/godot,Faless/godot,ZuBsPaCe/godot,vnen/godot,akien-mga/godot,BastiaanOlij/godot,akien-mga/godot,ZuBsPaCe/godot,Zylann/godot,Faless/godot,vnen/godot,guilhermefelipecgs/godot,Zylann/godot,Shockblast/godot,sanikoyes/godot,BastiaanOlij/godot,sanikoyes/godot,josempans/godot,pkowal1982/godot,pkowal1982/godot,vnen/godot,BastiaanOlij/godot,sanikoyes/godot,Valentactive/godot,josempans/godot,Faless/godot,vkbsb/godot,Zylann/godot,Faless/godot,Shockblast/godot,godotengine/godot,josempans/godot,Valentactive/godot,vnen/godot,vnen/godot,pkowal1982/godot,Zylann/godot,ZuBsPaCe/godot,firefly2442/godot,pkowal1982/godot,BastiaanOlij/godot,godotengine/godot,sanikoyes/godot,ZuBsPaCe/godot,vkbsb/godot,Zylann/godot