DOC fix remove_namespaces example
DOC fix remove_namespaces example

See https://github.com/scrapy/parsel/pull/119

eLRuLL/scrapy,kmike/scrapy,Ryezhang/scrapy,wujuguang/scrapy,pablohoffman/scrapy,pawelmhm/scrapy,dangra/scrapy,elacuesta/scrapy,elacuesta/scrapy,dangra/scrapy,finfish/scrapy,scrapy/scrapy,finfish/scrapy,kmike/scrapy,pawelmhm/scrapy,eLRuLL/scrapy,Ryezhang/scrapy,eLRuLL/scrapy,starrify/scrapy,starrify/scrapy,scrapy/scrapy,pablohoffman/scrapy,ArturGaspar/scrapy,pablohoffman/scrapy,ArturGaspar/scrapy,scrapy/scrapy,Ryezhang/scrapy,wujuguang/scrapy,finfish/scrapy,dangra/scrapy,wujuguang/scrapy,starrify/scrapy,kmike/scrapy,elacuesta/scrapy,pawelmhm/scrapy,ArturGaspar/scrapy