Replace 'Enter empty string' with 'Press Enter'
Replace 'Enter empty string' with 'Press Enter'

Keeps consistency of "Press <button>" instructions. Also, dispels confusion of potentially entering an empty string, ' ' , when the user simply has to press enter.
astorije/karma,lencioni/karma,tomkuk/karma,johnjbarton/karma,powerkid/karma,johnjbarton/karma,youprofit/karma,shirish87/karma,powerkid/karma,SamuelMarks/karma,IveWong/karma,panrafal/karma,oyiptong/karma,stevemao/karma,vtsvang/karma,lencioni/karma,buley/karma,david-garcia-nete/karma,johnjbarton/karma,codedogfish/karma,patrickporto/karma,KrekkieD/karma,buley/karma,harme199497/karma,astorije/karma,maksimr/karma,pedrotcaraujo/karma,vtsvang/karma,chrisirhc/karma,simudream/karma,timebackzhou/karma,marthinus-engelbrecht/karma,astorije/karma,brianmhunt/karma,karma-runner/karma,Sanjo/karma,pedrotcaraujo/karma,kahwee/karma,Klaudit/karma,wesleycho/karma,jjoos/karma,hitesh97/karma,yandex-lego/karma,codedogfish/karma,powerkid/karma,xiaoking/karma,unional/karma,brianmhunt/karma,oyiptong/karma,mprobst/karma,jjoos/karma,ernsheong/karma,timebackzhou/karma,karma-runner/karma,aiboy/karma,Sanjo/karma,simudream/karma,tomkuk/karma,brianmhunt/karma,karma-runner/karma,vtsvang/karma,kahwee/karma,pmq20/karma,skycocker/karma,pmq20/karma,Dignifiedquire/karma,youprofit/karma,Klaudit/karma,hitesh97/karma,Dignifiedquire/karma,gayancliyanage/karma,david-garcia-nete/karma,harme199497/karma,xiaoking/karma,maksimr/karma,SamuelMarks/karma,mprobst/karma,jamestalmage/karma,brianmhunt/karma,jamestalmage/karma,timebackzhou/karma,simudream/karma,clbond/karma,hitesh97/karma,skycocker/karma,maksimr/karma,nmalaguti/karma,shirish87/karma,wesleycho/karma,oyiptong/karma,KrekkieD/karma,pmq20/karma,johnjbarton/karma,IveWong/karma,harme199497/karma,simudream/karma,clbond/karma,ernsheong/karma,clbond/karma,kahwee/karma,stevemao/karma,nmalaguti/karma,aiboy/karma,patrickporto/karma,mprobst/karma,IsaacChapman/karma,marthinus-engelbrecht/karma,yandex-lego/karma,behzad88/karma,KrekkieD/karma,tomkuk/karma,Klaudit/karma,david-garcia-nete/karma,panrafal/karma,wesleycho/karma,IveWong/karma,xiaoking/karma,rhlass/karma,wesleycho/karma,jamestalmage/karma,yandex-lego/karma,kahwee/karma,youprofit/karma,gayancliyanage/karma,jjoos/karma,skycocker/karma,astorije/karma,jamestalmage/karma,shirish87/karma,jjoos/karma,behzad88/karma,behzad88/karma,xiaoking/karma,Sanjo/karma,IveWong/karma,stevemao/karma,aiboy/karma,buley/karma,panrafal/karma,pedrotcaraujo/karma,KrekkieD/karma,powerkid/karma,rhlass/karma,IsaacChapman/karma,codedogfish/karma,chrisirhc/karma,lencioni/karma,IsaacChapman/karma,Dignifiedquire/karma,unional/karma,codedogfish/karma,patrickporto/karma,Dignifiedquire/karma,aiboy/karma,SamuelMarks/karma,Sanjo/karma,gayancliyanage/karma,marthinus-engelbrecht/karma,tomkuk/karma,vtsvang/karma,youprofit/karma,ernsheong/karma,harme199497/karma,stevemao/karma,nmalaguti/karma,buley/karma,patrickporto/karma,unional/karma,unional/karma,marthinus-engelbrecht/karma,pedrotcaraujo/karma,gayancliyanage/karma,clbond/karma,rhlass/karma,oyiptong/karma,Klaudit/karma,chrisirhc/karma,karma-runner/karma,hitesh97/karma,IsaacChapman/karma,chrisirhc/karma,pmq20/karma,timebackzhou/karma,rhlass/karma,nmalaguti/karma,skycocker/karma