Improve text formatting in coala settings docs
Improve text formatting in coala settings docs

- use short url
- highlight the command line code

Fixes https://github.com/coala/coala/issues/3449

yashLadha/coala,aptrishu/coala,impmihai/coala,coala-analyzer/coala,nemaniarjun/coala,Nosferatul/coala,impmihai/coala,arjunsinghy96/coala,coala/coala,NiklasMM/coala,coala/coala,damngamerz/coala,Asalle/coala,Balaji2198/coala,yashtrivedi96/coala,Shade5/coala,MariosPanag/coala,Shade5/coala,sagark123/coala,refeed/coala,jayvdb/coala,karansingh1559/coala,arush0311/coala,nemaniarjun/coala,NiklasMM/coala,NiklasMM/coala,SanketDG/coala,Shade5/coala,rimacone/testing2,sagark123/coala,Asnelchristian/coala,Asnelchristian/coala,impmihai/coala,JohnS-01/coala,sagark123/coala,coala-analyzer/coala,RJ722/coala,aptrishu/coala,JohnS-01/coala,karansingh1559/coala,coala/coala,netman92/coala,arjunsinghy96/coala,ayushin78/coala,coala-analyzer/coala,CruiseDevice/coala,MariosPanag/coala,yashtrivedi96/coala,yashtrivedi96/coala,Asalle/coala,incorrectusername/coala,incorrectusername/coala,Asalle/coala,nemaniarjun/coala,jayvdb/coala,yashLadha/coala,Nosferatul/coala,refeed/coala,kartikeys98/coala,meetmangukiya/coala,RJ722/coala,rimacone/testing2,rimacone/testing2,jayvdb/coala,ayushin78/coala,damngamerz/coala,aptrishu/coala,Balaji2198/coala,meetmangukiya/coala,kartikeys98/coala,CruiseDevice/coala,Asnelchristian/coala,SanketDG/coala,yashLadha/coala,SanketDG/coala,arush0311/coala,netman92/coala,shreyans800755/coala,karansingh1559/coala,Balaji2198/coala,Nosferatul/coala,arjunsinghy96/coala,meetmangukiya/coala,netman92/coala,damngamerz/coala,kartikeys98/coala,incorrectusername/coala,JohnS-01/coala,RJ722/coala,CruiseDevice/coala,ayushin78/coala,shreyans800755/coala,refeed/coala,shreyans800755/coala,arush0311/coala,MariosPanag/coala