Expand `_.assign` doc example. [closes #819] [ci skip]
Expand `_.assign` doc example. [closes #819] [ci skip]

rtorr/lodash,imjerrybao/lodash,huyinghuan/lodash,greyhwndz/lodash,tejokumar/lodash,reggi/lodash,BernhardRode/lodash,leolin1229/lodash,AndBicScadMedia/lodash,beaugunderson/lodash,woldie/lodash,Lottid/lodash,lekkas/lodash,schnerd/lodash,PhiLhoSoft/lodash,r14r/fork_javascript_lodash,huyinghuan/lodash,justintung/lodash,therebelbeta/lodash,prawnsalad/lodash,huyinghuan/lodash,krrg/lodash,IveWong/lodash,prawnsalad/lodash,tgriesser/lodash,rlugojr/lodash,jzning-martian/lodash,Xotic750/lodash,tejokumar/lodash,justintung/lodash,timruffles/lodash,r14r/fork_javascript_lodash,dgoncalves1/lodash,af7/lodash,felixshu/lodash,Droogans/lodash,greyhwndz/lodash,bnicart/lodash,r14r/fork_javascript_lodash,lekoaf/lodash,hafeez-syed/lodash,jacwright/lodash,krahman/lodash,krahman/lodash,timruffles/lodash,xixilive/lodash,MaxPRafferty/lodash,polarbird/lodash,tonyonodi/lodash,greyhwndz/lodash,julianocomg/lodash,msmorgan/lodash,polarbird/lodash,boneskull/lodash,transGLUKator/lodash,hitesh97/lodash,r14r-work/fork_javascript_lodash,jasnell/lodash,youprofit/lodash,lekoaf/lodash,studiowangfei/lodash,jshanson7/lodash,zestia/lodash,developer-prosenjit/lodash,Andrey-Pavlov/lodash,gdi2290/lodash,reggi/lodash,woldie/lodash,Jaspersoft/lodash,rlugojr/lodash,woldie/lodash,Droogans/lodash,zhangguangyong/lodash,xiwc/lodash,xiwc/lodash,lzheng571/lodash,justintung/lodash,zhangguangyong/lodash,Lottid/lodash,krrg/lodash,julianocomg/lodash,AneesMohammed/lodash,stewx/lodash,lekkas/lodash,javiosyc/lodash,lzheng571/lodash,enng0227/lodash,ajefremovs/lodash,imjerrybao/lodash,julianocomg/lodash,phillipalexander/lodash,krahman/lodash,ror/lodash,javiosyc/lodash,leolin1229/lodash,codydaig/lodash,IveWong/lodash,chrootsu/lodash,gutenye/lodash,tquetano-r7/lodash,joshuaprior/lodash,ajefremovs/lodash,tgriesser/lodash,stewx/lodash,Lottid/lodash,nsamarcos/lodash,Andrey-Pavlov/lodash,Jaspersoft/lodash,rtorr/lodash,benweet/lodash,Moykn/lodash,mshoaibraja/lodash,xixilive/lodash,Moykn/lodash,af7/lodash,Andrey-Pavlov/lodash,MaxPRafferty/lodash,enng0227/lodash,samuelbeek/lodash,joshuaprior/lodash,xiwc/lodash,youprofit/lodash,felixshu/lodash,gdi2290/lodash,beaugunderson/lodash,shwaydogg/lodash,samuelbeek/lodash,jshanson7/lodash,zhangguangyong/lodash,mshoaibraja/lodash,polarbird/lodash,codydaig/lodash,jasnell/lodash,steelsojka/lodash,nbellowe/lodash,ror/lodash,nsamarcos/lodash,nbellowe/lodash,steelsojka/lodash,ajefremovs/lodash,benweet/lodash,ror/lodash,Xotic750/lodash,jshanson7/lodash,hafeez-syed/lodash,Moykn/lodash,bnicart/lodash,zestia/lodash,ricardohbin/lodash,neouser99/lodash,developer-prosenjit/lodash,ricardohbin/lodash,tquetano-r7/lodash,ricardohbin/lodash,Droogans/lodash,mshoaibraja/lodash,naoina/lodash,rtorr/lodash,hitesh97/lodash,andersonaguiar/lodash,imjerrybao/lodash,r14r-work/fork_javascript_lodash,schnerd/lodash,xixilive/lodash,MaxPRafferty/lodash,javiosyc/lodash,tonyonodi/lodash,bnicart/lodash,stewx/lodash,AneesMohammed/lodash,tejokumar/lodash,neouser99/lodash,zestia/lodash,schnerd/lodash,naoina/lodash,hafeez-syed/lodash,AndBicScadMedia/lodash,tgriesser/lodash,lekkas/lodash,Jaspersoft/lodash,shwaydogg/lodash,joshuaprior/lodash,dgoncalves1/lodash,AneesMohammed/lodash,jacwright/lodash,gutenye/lodash,andersonaguiar/lodash,gutenye/lodash,samuelbeek/lodash,mjosh954/lodash,developer-prosenjit/lodash,studiowangfei/lodash,nbellowe/lodash,benweet/lodash,jasnell/lodash,BernhardRode/lodash,msmorgan/lodash,transGLUKator/lodash,lzheng571/lodash,dgoncalves1/lodash,leolin1229/lodash,timruffles/lodash,therebelbeta/lodash,prawnsalad/lodash,r14r-work/fork_javascript_lodash,PhiLhoSoft/lodash,IveWong/lodash,lekoaf/lodash,phillipalexander/lodash,PhiLhoSoft/lodash,jzning-martian/lodash,krrg/lodash,neouser99/lodash,jacwright/lodash,boneskull/lodash,mjosh954/lodash,studiowangfei/lodash,shwaydogg/lodash,transGLUKator/lodash,Xotic750/lodash,BernhardRode/lodash,tquetano-r7/lodash,hitesh97/lodash,phillipalexander/lodash,af7/lodash,naoina/lodash,mjosh954/lodash,chrootsu/lodash,felixshu/lodash,reggi/lodash,enng0227/lodash,nsamarcos/lodash,AndBicScadMedia/lodash,jzning-martian/lodash,youprofit/lodash,codydaig/lodash,chrootsu/lodash,andersonaguiar/lodash,therebelbeta/lodash