Fix link to Theme/Plugin Release Process (#285)
Fix link to Theme/Plugin Release Process (#285)

Fixes first half of #860
Quy/grav-learn,miljan-aleksic/grav-learn,Quy/grav-learn,miljan-aleksic/grav-learn,Quy/grav-learn,getgrav/grav-learn,getgrav/grav-learn,miljan-aleksic/grav-learn,getgrav/grav-learn,Quy/grav-learn,getgrav/grav-learn,miljan-aleksic/grav-learn