Update documentation on joystick vibration.
Update documentation on joystick vibration.

Added a note that long vibration durations are not recommended because of hardware limitations.
For example, my ps4 controller can only vibrate for ~3s on linux.

vkbsb/godot,pkowal1982/godot,ficoos/godot,tomreyn/godot,pkowal1982/godot,morrow1nd/godot,ZuBsPaCe/godot,Max-Might/godot,honix/godot,exabon/godot,guilhermefelipecgs/godot,firefly2442/godot,firefly2442/godot,BastiaanOlij/godot,RandomShaper/godot,morrow1nd/godot,DmitriySalnikov/godot,morrow1nd/godot,honix/godot,ageazrael/godot,mcanders/godot,Marqin/godot,Zylann/godot,FateAce/godot,Paulloz/godot,vnen/godot,Marqin/godot,groud/godot,exabon/godot,NateWardawg/godot,ageazrael/godot,guilhermefelipecgs/godot,ageazrael/godot,honix/godot,Shockblast/godot,DmitriySalnikov/godot,zicklag/godot,Paulloz/godot,NateWardawg/godot,Valentactive/godot,ZuBsPaCe/godot,MrMaidx/godot,okamstudio/godot,zicklag/godot,FateAce/godot,Faless/godot,ageazrael/godot,okamstudio/godot,josempans/godot,Faless/godot,ZuBsPaCe/godot,honix/godot,vnen/godot,akien-mga/godot,vnen/godot,Max-Might/godot,guilhermefelipecgs/godot,BastiaanOlij/godot,firefly2442/godot,vkbsb/godot,RebelliousX/Go_Dot,vkbsb/godot,Marqin/godot,Zylann/godot,FateAce/godot,ZuBsPaCe/godot,sanikoyes/godot,akien-mga/godot,Brickcaster/godot,RebelliousX/Go_Dot,jejung/godot,Max-Might/godot,sanikoyes/godot,okamstudio/godot,BastiaanOlij/godot,Faless/godot,sanikoyes/godot,MrMaidx/godot,ex/godot,MrMaidx/godot,akien-mga/godot,Paulloz/godot,FateAce/godot,godotengine/godot,NateWardawg/godot,okamstudio/godot,groud/godot,Brickcaster/godot,vnen/godot,FateAce/godot,Zylann/godot,RebelliousX/Go_Dot,RandomShaper/godot,Paulloz/godot,NateWardawg/godot,firefly2442/godot,groud/godot,n-pigeon/godot,ex/godot,NateWardawg/godot,groud/godot,Max-Might/godot,Brickcaster/godot,FateAce/godot,RandomShaper/godot,n-pigeon/godot,n-pigeon/godot,Zylann/godot,Faless/godot,tomreyn/godot,Shockblast/godot,MarianoGnu/godot,Valentactive/godot,sanikoyes/godot,akien-mga/godot,MarianoGnu/godot,Valentactive/godot,guilhermefelipecgs/godot,okamstudio/godot,RandomShaper/godot,guilhermefelipecgs/godot,ex/godot,pkowal1982/godot,pkowal1982/godot,MarianoGnu/godot,sanikoyes/godot,jejung/godot,DmitriySalnikov/godot,okamstudio/godot,mcanders/godot,pkowal1982/godot,akien-mga/godot,vnen/godot,vkbsb/godot,MrMaidx/godot,josempans/godot,Shockblast/godot,jejung/godot,n-pigeon/godot,Brickcaster/godot,Faless/godot,Max-Might/godot,ex/godot,godotengine/godot,Valentactive/godot,guilhermefelipecgs/godot,godotengine/godot,firefly2442/godot,Valentactive/godot,Marqin/godot,Zylann/godot,Shockblast/godot,guilhermefelipecgs/godot,zicklag/godot,ex/godot,morrow1nd/godot,pkowal1982/godot,DmitriySalnikov/godot,NateWardawg/godot,Marqin/godot,jejung/godot,DmitriySalnikov/godot,ficoos/godot,Brickcaster/godot,NateWardawg/godot,firefly2442/godot,n-pigeon/godot,MarianoGnu/godot,MrMaidx/godot,exabon/godot,exabon/godot,ageazrael/godot,BastiaanOlij/godot,DmitriySalnikov/godot,firefly2442/godot,ageazrael/godot,honix/godot,BastiaanOlij/godot,josempans/godot,ZuBsPaCe/godot,zicklag/godot,ex/godot,godotengine/godot,akien-mga/godot,Shockblast/godot,ex/godot,okamstudio/godot,josempans/godot,morrow1nd/godot,ZuBsPaCe/godot,jejung/godot,josempans/godot,ficoos/godot,firefly2442/godot,okamstudio/godot,RandomShaper/godot,Marqin/godot,sanikoyes/godot,zicklag/godot,guilhermefelipecgs/godot,Shockblast/godot,godotengine/godot,pkowal1982/godot,MrMaidx/godot,tomreyn/godot,BastiaanOlij/godot,groud/godot,NateWardawg/godot,Zylann/godot,Brickcaster/godot,vkbsb/godot,n-pigeon/godot,ficoos/godot,RandomShaper/godot,mcanders/godot,Paulloz/godot,sanikoyes/godot,Valentactive/godot,mcanders/godot,vnen/godot,ZuBsPaCe/godot,MarianoGnu/godot,ficoos/godot,Paulloz/godot,Faless/godot,Zylann/godot,exabon/godot,Shockblast/godot,zicklag/godot,n-pigeon/godot,RebelliousX/Go_Dot,jejung/godot,sanikoyes/godot,pkowal1982/godot,RebelliousX/Go_Dot,mcanders/godot,godotengine/godot,josempans/godot,Shockblast/godot,vkbsb/godot,Zylann/godot,mcanders/godot,Brickcaster/godot,Valentactive/godot,RebelliousX/Go_Dot,ex/godot,MarianoGnu/godot,MarianoGnu/godot,josempans/godot,okamstudio/godot,godotengine/godot,josempans/godot,exabon/godot,Paulloz/godot,BastiaanOlij/godot,vkbsb/godot,okamstudio/godot,BastiaanOlij/godot,tomreyn/godot,Valentactive/godot,akien-mga/godot,Faless/godot,ficoos/godot,RandomShaper/godot,groud/godot,Faless/godot,NateWardawg/godot,ZuBsPaCe/godot,akien-mga/godot,vnen/godot,ageazrael/godot,morrow1nd/godot,MarianoGnu/godot,vnen/godot,vkbsb/godot,DmitriySalnikov/godot,honix/godot,godotengine/godot,tomreyn/godot,Max-Might/godot