Fix error in Vector2.reflect() description
Fix error in Vector2.reflect() description

The description was probably copied from Vector3.reflect(), and
unfortunately did not match the 2D behaviour (where n is apparently the
direction vector of the symmetry line, not the normal).

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