docs/config: fix markup
docs/config: fix markup

Related to #263.

cezarsa/tsuru,ggarnier/tsuru,cgvarela/tsuru,cezarsa/tsuru,Endika/tsuru,hcxiong/tsuru,mderaldo/tsuru,jblancett/tsuru,kgrvamsi/tsuru,gwmoura/tsuru,kgrvamsi/tsuru,Endika/tsuru,RichardKnop/tsuru,ggarnier/tsuru,guilhermebr/tsuru,gciotta/tsuru,hugoantunes/tsuru,kgrvamsi/tsuru,ggarnier/tsuru,tuxmonteiro/tsuru,Endika/tsuru,guilhermebr/tsuru,cgvarela/tsuru,tsuru/tsuru,mderaldo/tsuru,firebitsbr/tsuru,hcxiong/tsuru,cezarsa/tsuru,ArxdSilva/tsuru,cezarsa/tsuru,cgvarela/tsuru,ggarnier/tsuru,tsuru/tsuru,tsuru/tsuru,tsuru/tsuru,tuxmonteiro/tsuru,ArxdSilva/tsuru,gciotta/tsuru,gwmoura/tsuru,guilhermebr/tsuru,hcxiong/tsuru,gciotta/tsuru,jblancett/tsuru,firebitsbr/tsuru,tuxmonteiro/tsuru,firebitsbr/tsuru,hugoantunes/tsuru,RichardKnop/tsuru,RichardKnop/tsuru,4eek/tsuru,jblancett/tsuru,guilhermebr/tsuru,ArxdSilva/tsuru,gwmoura/tsuru,ArxdSilva/tsuru,4eek/tsuru,4eek/tsuru,mderaldo/tsuru