Result.py: Fill additional_message from aspect.docs
Result.py: Fill additional_message from aspect.docs

Closes https://github.com/coala/coala/issues/4680

coala-analyzer/coala,kartikeys98/coala,Asalle/coala,nemaniarjun/coala,CruiseDevice/coala,SanketDG/coala,aptrishu/coala,nemaniarjun/coala,jayvdb/coala,rimacone/testing2,coala-analyzer/coala,coala/coala,CruiseDevice/coala,CruiseDevice/coala,karansingh1559/coala,rimacone/testing2,aptrishu/coala,karansingh1559/coala,kartikeys98/coala,rimacone/testing2,karansingh1559/coala,jayvdb/coala,SanketDG/coala,coala/coala,jayvdb/coala,shreyans800755/coala,nemaniarjun/coala,SanketDG/coala,Nosferatul/coala,shreyans800755/coala,coala/coala,coala-analyzer/coala,Asalle/coala,Nosferatul/coala,Asalle/coala,kartikeys98/coala,Nosferatul/coala,shreyans800755/coala,aptrishu/coala