Update 1-general-configuration.md
Update 1-general-configuration.md

Demonstrate dynamically setting the `site_title_image`, this is great for multi-tenant use (which is exactly how I discovered this by digging through the code and trying it out).
cmunozgar/activeadmin,senid231/activeadmin,mediebruket/activeadmin,bcavileer/activeadmin,mauriciopasquier/active_admin,buren/activeadmin,zfben/activeadmin,vytenis-s/activeadmin,activeadmin/activeadmin,h2ocube/active_admin,buren/activeadmin,applexiaohao/activeadmin,temochka-test/activeadmin,artofhuman/activeadmin,MohamedHegab/activeadmin,hiroponz/activeadmin,FundingGates/activeadmin,hobbes37/activeadmin,presskey/activeadmin,davydovanton/activeadmin,Pollywog23/activeadmin,siutin/activeadmin,Some1Else/activeadmin,ampinog/activeadmin,mrjman/activeadmin,dhartoto/activeadmin,jethroo/activeadmin,chrisseldo/activeadmin,maysam/activeadmin,iguchi1124/activeadmin,quikly/active_admin,Andrekra/activeadmin,applexiaohao/activeadmin,thomascarterx/activeadmin,dannyshafer/activeadmin,javierjulio/activeadmin,dalegregory/activeadmin,Ryohu/activeadmin,Some1Else/activeadmin,maysam/activeadmin,hiroponz/activeadmin,beyondthestory/activeadmin,tjgrathwell/activeadmin,jclay/active_admin,sharma1nitish/activeadmin,ampinog/activeadmin,iguchi1124/activeadmin,Ryohu/activeadmin,hobbes37/activeadmin,westonplatter/activeadmin,timoschilling/activeadmin,iuriandreazza/activeadmin,timoschilling/activeadmin,h2ocube/active_admin,shishir127/activeadmin,beyondthestory/activeadmin,westonplatter/activeadmin,lampo/activeadmin,thomascarterx/activeadmin,zfben/activeadmin,dannyshafer/activeadmin,cmunozgar/activeadmin,vytenis-s/activeadmin,saiqulhaq/activeadmin,iuriandreazza/activeadmin,sanyaade-iot/activeadmin,chdem/activeadmin,hiroponz/activeadmin,JeffreyATW/activeadmin,chdem/activeadmin,varyonic/activeadmin,gogovan/activeadmin,saveav/activeadmin,whatcould/active_admin,wspurgin/activeadmin,mohitnatoo/activeadmin,sanyaade-iot/activeadmin,alonerage/activeadmin,halilim/activeadmin,mynksngh/activeadmin,Pollywog23/activeadmin,rubixware/activeadmin,rubixware/activeadmin,adibsaad/activeadmin,iguchi1124/activeadmin,JeffreyATW/activeadmin,jethroo/activeadmin,bolshakov/activeadmin,davydovanton/activeadmin,senid231/activeadmin,Ibotta/activeadmin,buren/activeadmin,waymondo/active_admin,mynksngh/activeadmin,chrisseldo/activeadmin,deivid-rodriguez/activeadmin,mediebruket/activeadmin,getkiwicom/activeadmin,scarver2/activeadmin,SoftSwiss/active_admin,samvincent/active_admin,iuriandreazza/activeadmin,saveav/activeadmin,samvincent/active_admin,javierjulio/activeadmin,mateusg/active_admin,vytenis-s/activeadmin,Some1Else/activeadmin,chrisseldo/activeadmin,krautcomputing/activeadmin,dhartoto/activeadmin,Ibotta/activeadmin,jclay/active_admin,Ibotta/activeadmin,tf/activeadmin,cmunozgar/activeadmin,scarver2/activeadmin,Pollywog23/activeadmin,yijiasu/activeadmin,FundingGates/activeadmin,keichan34/active_admin,whatcould/active_admin,alonerage/activeadmin,hyperoslo/activeadmin,hobbes37/activeadmin,Ryohu/activeadmin,halilim/activeadmin,scarver2/activeadmin,bloomrain/activeadmin,davydovanton/activeadmin,danielevans/activeadmin,deivid-rodriguez/activeadmin,SoftSwiss/active_admin,adibsaad/activeadmin,yeti-switch/active_admin,saiqulhaq/activeadmin,javierjulio/activeadmin,waymondo/active_admin,Davidzhu001/activeadmin,Amandeepsinghghai/activeadmin,saiqulhaq/activeadmin,sharma1nitish/activeadmin,tf/activeadmin,presskey/activeadmin,MohamedHegab/activeadmin,bcavileer/activeadmin,Andrekra/activeadmin,westonplatter/activeadmin,strivedi183/activeadmin,mauriciopasquier/active_admin,totzyuta/activeadmin,ampinog/activeadmin,seanski/activeadmin,alonerage/activeadmin,yeti-switch/active_admin,samvincent/active_admin,mrjman/activeadmin,yijiasu/activeadmin,maysam/activeadmin,bolshakov/activeadmin,siutin/activeadmin,ishumilova/activeadmin,hyperoslo/activeadmin,shishir127/activeadmin,jclay/active_admin,iuriandreazza/activeadmin,bolshakov/activeadmin,wspurgin/activeadmin,waymondo/active_admin,zfben/activeadmin,ishumilova/activeadmin,saveav/activeadmin,applexiaohao/activeadmin,JeffreyATW/activeadmin,dhartoto/activeadmin,mateusg/active_admin,jethroo/activeadmin,mwlang/active_admin,lampo/activeadmin,temochka-test/activeadmin,danielevans/activeadmin,getkiwicom/activeadmin,rtrepo/activeadmin,SoftSwiss/active_admin,halilim/activeadmin,mynksngh/activeadmin,iuriandreazza/activeadmin,beyondthestory/activeadmin,artofhuman/activeadmin,Amandeepsinghghai/activeadmin,rubixware/activeadmin,krautcomputing/activeadmin,FundingGates/activeadmin,vraravam/activeadmin,krautcomputing/activeadmin,mwlang/active_admin,danielevans/activeadmin,mohitnatoo/activeadmin,mateusg/active_admin,yeti-switch/active_admin,bloomrain/activeadmin,Davidzhu001/activeadmin,dalegregory/activeadmin,dannyshafer/activeadmin,thomascarterx/activeadmin,chdem/activeadmin,MohamedHegab/activeadmin,varyonic/activeadmin,vraravam/activeadmin,strivedi183/activeadmin,seanski/activeadmin,quikly/active_admin,adibsaad/activeadmin,artofhuman/activeadmin,activeadmin/activeadmin,shishir127/activeadmin,totzyuta/activeadmin,Skulli/activeadmin,temochka-test/activeadmin,h2ocube/active_admin,keichan34/active_admin,gogovan/activeadmin,seanski/activeadmin,mauriciopasquier/act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