Fix tabulation of rst and change documentation link.
Fix tabulation of rst and change documentation link.

pawelmhm/scrapy,pablohoffman/scrapy,pablohoffman/scrapy,pablohoffman/scrapy,pawelmhm/scrapy,scrapy/scrapy,pawelmhm/scrapy,starrify/scrapy,dangra/scrapy,scrapy/scrapy,elacuesta/scrapy,dangra/scrapy,elacuesta/scrapy,starrify/scrapy,scrapy/scrapy,starrify/scrapy,elacuesta/scrapy,dangra/scrapy