importer: fix typo and a broken link (#6795)
importer: fix typo and a broken link (#6795)


pingcap/tidb,CodeRushing/tidb,mccxj/tidb,tiancaiamao/tidb,XuHuaiyu/tidb,ming-relax/tidb,wusphinx/tidb,kyle-wang/tidb,c4pt0r/tidb,kyle-wang/tidb,c4pt0r/tidb,Cofyc/tidb,EvilMcJerkface/tidb,ngaut/tidb,c4pt0r/tidb,kyle-wang/tidb,pingcap/tidb,CodeRushing/tidb,ngaut/tidb,ngaut/tidb,coocood/tidb,kyle-wang/tidb,Nify/tidb,qiuyesuifeng/tidb,coocood/tidb,XuHuaiyu/tidb,pingcap/tidb,cosmtrek/tidb,mccxj/tidb,c4pt0r/tidb,pingcap/tidb,EvilMcJerkface/tidb,c4pt0r/tidb,ngaut/tidb,Nify/tidb,wusphinx/tidb,kyle-wang/tidb,Cofyc/tidb,ngaut/tidb,pingcap/tidb,pingcap/tidb,ming-relax/tidb,c4pt0r/tidb,cosmtrek/tidb,ngaut/tidb,tiancaiamao/tidb,kyle-wang/tidb,qiuyesuifeng/tidb