Ninja fix a few possible metrics.rst doc bugs
Ninja fix a few possible metrics.rst doc bugs

Closes #159

Patch by Joaquin Casares; Reviewed by Chris Lohfink

tjake/cassandra,adejanovski/cassandra,iamaleksey/cassandra,iamaleksey/cassandra,jasobrown/cassandra,christian-esken/cassandra,aweisberg/cassandra,adelapena/cassandra,josh-mckenzie/cassandra,thelastpickle/cassandra,krummas/cassandra,jeffjirsa/cassandra,michaelsembwever/cassandra,apache/cassandra,mike-tr-adamson/cassandra,clohfink/cassandra,mkjellman/cassandra,jeffjirsa/cassandra,ollie314/cassandra,clohfink/cassandra,yukim/cassandra,ifesdjeen/cassandra,belliottsmith/cassandra,clohfink/cassandra,Instagram/cassandra,josh-mckenzie/cassandra,jeromatron/cassandra,bcoverston/cassandra,adejanovski/cassandra,WorksApplications/cassandra,belliottsmith/cassandra,DikangGu/cassandra,kgreav/cassandra,driftx/cassandra,clohfink/cassandra,kgreav/cassandra,jeromatron/cassandra,tommystendahl/cassandra,tjake/cassandra,yukim/cassandra,adelapena/cassandra,bcoverston/cassandra,apache/cassandra,szhou1234/cassandra,szhou1234/cassandra,aureagle/cassandra,michaelsembwever/cassandra,chbatey/cassandra-1,juiceblender/cassandra,chbatey/cassandra-1,adejanovski/cassandra,yukim/cassandra,krummas/cassandra,tjake/cassandra,Instagram/cassandra,jasonstack/cassandra,jasonstack/cassandra,spodkowinski/cassandra,instaclustr/cassandra,pauloricardomg/cassandra,Instagram/cassandra,bdeggleston/cassandra,belliottsmith/cassandra,iamaleksey/cassandra,ptnapoleon/cassandra,pauloricardomg/cassandra,jrwest/cassandra,josh-mckenzie/cassandra,exoscale/cassandra,driftx/cassandra,aureagle/cassandra,mshuler/cassandra,snazy/cassandra,thelastpickle/cassandra,adelapena/cassandra,blerer/cassandra,blerer/cassandra,pauloricardomg/cassandra,stef1927/cassandra,juiceblender/cassandra,tommystendahl/cassandra,blerer/cassandra,michaelsembwever/cassandra,adelapena/cassandra,mike-tr-adamson/cassandra,spodkowinski/cassandra,iamaleksey/cassandra,jasonstack/cassandra,jbellis/cassandra,jrwest/cassandra,aureagle/cassandra,krummas/cassandra,apache/cassandra,apache/cassandra,stef1927/cassandra,mkjellman/cassandra,aboudreault/cassandra,pauloricardomg/cassandra,jasobrown/cassandra,Instagram/cassandra,jrwest/cassandra,cooldoger/cassandra,mkjellman/cassandra,juiceblender/cassandra,bdeggleston/cassandra,kgreav/cassandra,cooldoger/cassandra,snazy/cassandra,jrwest/cassandra,aboudreault/cassandra,ollie314/cassandra,blambov/cassandra,driftx/cassandra,snazy/cassandra,tjake/cassandra,ifesdjeen/cassandra,belliottsmith/cassandra,aboudreault/cassandra,mkjellman/cassandra,snazy/cassandra,jbellis/cassandra,jeffjirsa/cassandra,mike-tr-adamson/cassandra,ptnapoleon/cassandra,thelastpickle/cassandra,chbatey/cassandra-1,mshuler/cassandra,beobal/cassandra,jasobrown/cassandra,aweisberg/cassandra,mshuler/cassandra,christian-esken/cassandra,mike-tr-adamson/cassandra,bcoverston/cassandra,stef1927/cassandra,juiceblender/cassandra,jeffjirsa/cassandra,driftx/cassandra,kgreav/cassandra,exoscale/cassandra,blerer/cassandra,thelastpickle/cassandra,bdeggleston/cassandra,beobal/cassandra,spodkowinski/cassandra,ollie314/cassandra,stef1927/cassandra,blambov/cassandra,szhou1234/cassandra,beobal/cassandra,jeromatron/cassandra,spodkowinski/cassandra,aweisberg/cassandra,instaclustr/cassandra,WorksApplications/cassandra,szhou1234/cassandra,mshuler/cassandra,bcoverston/cassandra,bdeggleston/cassandra,aweisberg/cassandra,ifesdjeen/cassandra,krummas/cassandra,cooldoger/cassandra,michaelsembwever/cassandra,tommystendahl/cassandra,jasobrown/cassandra,tommystendahl/cassandra,WorksApplications/cassandra,yukim/cassandra,blambov/cassandra,DikangGu/cassandra,instaclustr/cassandra,exoscale/cassandra,ptnapoleon/cassandra,ifesdjeen/cassandra,cooldoger/cassandra,blambov/cassandra,christian-esken/cassandra,beobal/cassandra,jbellis/cassandra,josh-mckenzie/cassandra,WorksApplications/cassandra,DikangGu/cassandra,instaclustr/cassandra