doc: add ^version explanation to package.json docs
doc: add ^version explanation to package.json docs

Fixes #4910

Volune/npm,kimshinelove/naver-npm,yyx990803/npm,chadnickbok/npm,DaveEmmerson/npm,misterbyrne/npm,evocateur/npm,yibn2008/npm,midniteio/npm,yyx990803/npm,kemitchell/npm,yodeyer/npm,haggholm/npm,cchamberlain/npm,princeofdarkness76/npm,thomblake/npm,segrey/npm,chadnickbok/npm,midniteio/npm,evocateur/npm,evanlucas/npm,misterbyrne/npm,ekmartin/npm,misterbyrne/npm,Volune/npm,DaveEmmerson/npm,princeofdarkness76/npm,yibn2008/npm,kimshinelove/naver-npm,cchamberlain/npm-msys2,midniteio/npm,TimeToogo/npm,lxe/npm,haggholm/npm,xalopp/npm,kimshinelove/naver-npm,TimeToogo/npm,chadnickbok/npm,evanlucas/npm,TimeToogo/npm,lxe/npm,kemitchell/npm,haggholm/npm,xalopp/npm,Volune/npm,lxe/npm,princeofdarkness76/npm,cchamberlain/npm-msys2,thomblake/npm,segrey/npm,thomblake/npm,kemitchell/npm,yodeyer/npm,DaveEmmerson/npm,evocateur/npm,segrey/npm,cchamberlain/npm-msys2,ekmartin/npm,evanlucas/npm,yodeyer/npm,DIREKTSPEED-LTD/npm,DIREKTSPEED-LTD/npm,rsp/npm,DIREKTSPEED-LTD/npm,xalopp/npm,rsp/npm,rsp/npm,yyx990803/npm,ekmartin/npm,cchamberlain/npm,yibn2008/npm,cchamberlain/npm