docs/advanced_topics: fix grammar and typo
docs/advanced_topics: fix grammar and typo

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