add docs on inline R code to markdown quick reference
add docs on inline R code to markdown quick reference

suribes/rstudio,tbarrongh/rstudio,thklaus/rstudio,nvoron23/rstudio,jrnold/rstudio,jar1karp/rstudio,JanMarvin/rstudio,maligulzar/Rstudio-instrumented,tbarrongh/rstudio,brsimioni/rstudio,suribes/rstudio,john-r-mcpherson/rstudio,tbarrongh/rstudio,JanMarvin/rstudio,brsimioni/rstudio,more1/rstudio,jrnold/rstudio,john-r-mcpherson/rstudio,jar1karp/rstudio,vbelakov/rstudio,maligulzar/Rstudio-instrumented,brsimioni/rstudio,nvoron23/rstudio,sfloresm/rstudio,more1/rstudio,edrogers/rstudio,piersharding/rstudio,brsimioni/rstudio,nvoron23/rstudio,john-r-mcpherson/rstudio,jzhu8803/rstudio,john-r-mcpherson/rstudio,tbarrongh/rstudio,pssguy/rstudio,suribes/rstudio,edrogers/rstudio,suribes/rstudio,jar1karp/rstudio,piersharding/rstudio,pssguy/rstudio,suribes/rstudio,jzhu8803/rstudio,jar1karp/rstudio,piersharding/rstudio,sfloresm/rstudio,JanMarvin/rstudio,jzhu8803/rstudio,piersharding/rstudio,jar1karp/rstudio,vbelakov/rstudio,jzhu8803/rstudio,vbelakov/rstudio,sfloresm/rstudio,brsimioni/rstudio,brsimioni/rstudio,suribes/rstudio,thklaus/rstudio,maligulzar/Rstudio-instrumented,tbarrongh/rstudio,sfloresm/rstudio,jar1karp/rstudio,vbelakov/rstudio,tbarrongh/rstudio,sfloresm/rstudio,more1/rstudio,jrnold/rstudio,githubfun/rstudio,jrnold/rstudio,vbelakov/rstudio,pssguy/rstudio,john-r-mcpherson/rstudio,maligulzar/Rstudio-instrumented,thklaus/rstudio,jrnold/rstudio,vbelakov/rstudio,jzhu8803/rstudio,piersharding/rstudio,john-r-mcpherson/rstudio,vbelakov/rstudio,nvoron23/rstudio,thklaus/rstudio,githubfun/rstudio,more1/rstudio,more1/rstudio,pssguy/rstudio,sfloresm/rstudio,jrnold/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,piersharding/rstudio,piersharding/rstudio,jzhu8803/rstudio,jrnold/rstudio,piersharding/rstudio,edrogers/rstudio,jar1karp/rstudio,githubfun/rstudio,maligulzar/Rstudio-instrumented,pssguy/rstudio,githubfun/rstudio,maligulzar/Rstudio-instrumented,githubfun/rstudio,tbarrongh/rstudio,thklaus/rstudio,jzhu8803/rstudio,jar1karp/rstudio,more1/rstudio,JanMarvin/rstudio,thklaus/rstudio,edrogers/rstudio,jrnold/rstudio,JanMarvin/rstudio,pssguy/rstudio,piersharding/rstudio,maligulzar/Rstudio-instrumented,githubfun/rstudio,nvoron23/rstudio,edrogers/rstudio,jrnold/rstudio,nvoron23/rstudio,pssguy/rstudio,maligulzar/Rstudio-instrumented,nvoron23/rstudio,jzhu8803/rstudio,sfloresm/rstudio,john-r-mcpherson/rstudio,edrogers/rstudio,tbarrongh/rstudio,sfloresm/rstudio,vbelakov/rstudio,brsimioni/rstudio,pssguy/rstudio,maligulzar/Rstudio-instrumented,githubfun/rstudio,brsimioni/rstudio,more1/rstudio,more1/rstudio,thklaus/rstudio,jar1karp/rstudio,suribes/rstudio,suribes/rstudio,john-r-mcpherson/rstudio,edrogers/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,thklaus/rstudio,githubfun/rstudio,edrogers/rstudio