Fix typo in doc: runserver url
Fix typo in doc: runserver url

hoosteeno/mozillians,akatsoulas/mozillians,ChristineLaMuse/mozillians,johngian/mozillians,akarki15/mozillians,ChristineLaMuse/mozillians,satdav/mozillians,fxa90id/mozillians,brian-yang/mozillians,chirilo/mozillians,satdav/mozillians,akatsoulas/mozillians,anistark/mozillians,akarki15/mozillians,mozilla/mozillians,mozilla/mozillians,chirilo/mozillians,akarki15/mozillians,akarki15/mozillians,glogiotatidis/mozillians-new,justinpotts/mozillians,justinpotts/mozillians,glogiotatidis/mozillians-new,glogiotatidis/mozillians-new,satdav/mozillians,justinpotts/mozillians,johngian/mozillians,anistark/mozillians,ChristineLaMuse/mozillians,anistark/mozillians,hoosteeno/mozillians,glogiotatidis/mozillians-new,chirilo/mozillians,safwanrahman/mozillians,chirilo/mozillians,anistark/mozillians,safwanrahman/mozillians,mozilla/mozillians,brian-yang/mozillians,safwanrahman/mozillians,akatsoulas/mozillians,johngian/mozillians,johngian/mozillians,fxa90id/mozillians,fxa90id/mozillians,safwanrahman/mozillians,satdav/mozillians,brian-yang/mozillians,justinpotts/mozillians,mozilla/mozillians,hoosteeno/mozillians,akatsoulas/mozillians,fxa90id/mozillians,brian-yang/mozillians,hoosteeno/mozillians