docs: fix identation in installer example
docs: fix identation in installer example

ggarnier/tsuru,tsuru/tsuru,guilhermebr/tsuru,ggarnier/tsuru,ggarnier/tsuru,cezarsa/tsuru,guilhermebr/tsuru,ArxdSilva/tsuru,ArxdSilva/tsuru,tsuru/tsuru,tsuru/tsuru,cezarsa/tsuru,ggarnier/tsuru,cezarsa/tsuru,guilhermebr/tsuru,ArxdSilva/tsuru,tsuru/tsuru,guilhermebr/tsuru,ArxdSilva/tsuru,cezarsa/tsuru