Fix RefCounted description
Fix RefCounted description

If the class name is modified, its name in the description should be too.

However, pluralization is a bit complicated in this case. I'll give the options `RefCounteds` and `reference-counted objects`. Maybe both can be used.

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