documentation: Document cache.diff_intraline
documentation: Document cache.diff_intraline

This cache was added in an earlier version of Gerrit, but was not
covered in the documentation.

Change-Id: Iec90f07449d50b9033c4925c1b3f372c5aea1cf7
Signed-off-by: Shawn O. Pearce <f3ea74d906fa9fe97c1fef6bad9cb871485c7045@google.com>

m1kah/gerrit-contributions,jackminicloud/test,GerritCodeReview/gerrit,bpollack/gerrit,ashang/aaron-gerrit,midnightradio/gerrit,evanchueng/gerrit,jackminicloud/test,Overruler/gerrit,jackminicloud/test,supriyantomaftuh/gerrit,ckamm/gerrit,Distrotech/gerrit,MerritCR/merrit,joshuawilson/merrit,renchaorevee/gerrit,zommarin/gerrit,makholm/gerrit-ceremony,quyixia/gerrit,catrope/gerrit,pkdevbox/gerrit,sudosurootdev/gerrit,MerritCR/merrit,sudosurootdev/gerrit,MerritCR/merrit,WANdisco/gerrit,thesamet/gerrit,anminhsu/gerrit,MerritCR/merrit,renchaorevee/gerrit,Overruler/gerrit,austinchic/Gerrit,jackminicloud/test,qtproject/qtqa-gerrit,thesamet/gerrit,joshuawilson/merrit,netroby/gerrit,joshuawilson/merrit,Saulis/gerrit,atdt/gerrit,anminhsu/gerrit,hdost/gerrit,duboisf/gerrit,Team-OctOS/host_gerrit,Overruler/gerrit,Seinlin/gerrit,thesamet/gerrit,gerrit-review/gerrit,thinkernel/gerrit,ckamm/gerrit,gcoders/gerrit,qtproject/qtqa-gerrit,TonyChai24/test,gcoders/gerrit,qtproject/qtqa-gerrit,pkdevbox/gerrit,basilgor/gerrit,ckamm/gerrit,makholm/gerrit-ceremony,keerath/gerrit_newssh,Team-OctOS/host_gerrit,dwhipstock/gerrit,thesamet/gerrit,anminhsu/gerrit,ckamm/gerrit,catrope/gerrit,jackminicloud/test,Seinlin/gerrit,WANdisco/gerrit,CandyShop/gerrit,anminhsu/gerrit,qtproject/qtqa-gerrit,teamblueridge/gerrit,WANdisco/gerrit,gerrit-review/gerrit,CandyShop/gerrit,cjh1/gerrit,Team-OctOS/host_gerrit,gcoders/gerrit,basilgor/gerrit,renchaorevee/gerrit,Distrotech/gerrit,bpollack/gerrit,TonyChai24/test,pkdevbox/gerrit,pkdevbox/gerrit,Overruler/gerrit,renchaorevee/gerrit,midnightradio/gerrit,thinkernel/gerrit,thinkernel/gerrit,dwhipstock/gerrit,Team-OctOS/host_gerrit,ashang/aaron-gerrit,GerritCodeReview/gerrit,bootstraponline-archive/gerrit-mirror,dwhipstock/gerrit,keerath/gerrit_newssh,qtproject/qtqa-gerrit,supriyantomaftuh/gerrit,zommarin/gerrit,cjh1/gerrit,supriyantomaftuh/gerrit,hdost/gerrit,renchaorevee/gerrit,anminhsu/gerrit,jeblair/gerrit,WANdisco/gerrit,basilgor/gerrit,Distrotech/gerrit,GerritCodeReview/gerrit,gcoders/gerrit,basilgor/gerrit,austinchic/Gerrit,pkdevbox/gerrit,ashang/aaron-gerrit,Seinlin/gerrit,supriyantomaftuh/gerrit,hdost/gerrit,pkdevbox/gerrit,quyixia/gerrit,gerrit-review/gerrit,1yvT0s/gerrit,Saulis/gerrit,teamblueridge/gerrit,atdt/gerrit,keerath/gerrit_newssh,joshuawilson/merrit,gerrit-review/gerrit,duboisf/gerrit,catrope/gerrit,TonyChai24/test,TonyChai24/test,m1kah/gerrit-contributions,dwhipstock/gerrit,midnightradio/gerrit,Seinlin/gerrit,bpollack/gerrit,MerritCR/merrit,duboisf/gerrit,evanchueng/gerrit,qtproject/qtqa-gerrit,keerath/gerrit_newssh,catrope/gerrit,atdt/gerrit,thinkernel/gerrit,bpollack/gerrit,bootstraponline-archive/gerrit-mirror,gracefullife/gerrit,gcoders/gerrit,Saulis/gerrit,bootstraponline-archive/gerrit-mirror,gcoders/gerrit,jeblair/gerrit,gracefullife/gerrit,austinchic/Gerrit,anminhsu/gerrit,Distrotech/gerrit,midnightradio/gerrit,m1kah/gerrit-contributions,Seinlin/gerrit,CandyShop/gerrit,bpollack/gerrit,MerritCR/merrit,GerritCodeReview/gerrit,gerrit-review/gerrit,midnightradio/gerrit,evanchueng/gerrit,teamblueridge/gerrit,netroby/gerrit,netroby/gerrit,1yvT0s/gerrit,m1kah/gerrit-contributions,jackminicloud/test,makholm/gerrit-ceremony,WANdisco/gerrit,qtproject/qtqa-gerrit,MerritCR/merrit,bootstraponline-archive/gerrit-mirror,gracefullife/gerrit,basilgor/gerrit,Saulis/gerrit,Overruler/gerrit,GerritCodeReview/gerrit,1yvT0s/gerrit,thinkernel/gerrit,teamblueridge/gerrit,atdt/gerrit,1yvT0s/gerrit,dwhipstock/gerrit,supriyantomaftuh/gerrit,Saulis/gerrit,Seinlin/gerrit,hdost/gerrit,TonyChai24/test,jeblair/gerrit,Distrotech/gerrit,austinchic/Gerrit,midnightradio/gerrit,bootstraponline-archive/gerrit-mirror,quyixia/gerrit,gracefullife/gerrit,hdost/gerrit,cjh1/gerrit,thinkernel/gerrit,pkdevbox/gerrit,netroby/gerrit,1yvT0s/gerrit,MerritCR/merrit,Overruler/gerrit,WANdisco/gerrit,dwhipstock/gerrit,ckamm/gerrit,cjh1/gerrit,TonyChai24/test,dwhipstock/gerrit,thinkernel/gerrit,atdt/gerrit,Distrotech/gerrit,gerrit-review/gerrit,anminhsu/gerrit,netroby/gerrit,sudosurootdev/gerrit,evanchueng/gerrit,hdost/gerrit,ashang/aaron-gerrit,supriyantomaftuh/gerrit,CandyShop/gerrit,keerath/gerrit_newssh,Team-OctOS/host_gerrit,joshuawilson/merrit,bootstraponline-archive/gerrit-mirror,bpollack/gerrit,quyixia/gerrit,gracefullife/gerrit,ashang/aaron-gerrit,joshuawilson/merrit,Team-OctOS/host_gerrit,supriyantomaftuh/gerrit,teamblueridge/gerrit,thesamet/gerrit,thesamet/gerrit,quyixia/gerrit,TonyChai24/test,quyixia/gerrit,Team-OctOS/host_gerrit,Saulis/gerrit,sudosurootdev/gerrit,CandyShop/gerrit,zommarin/gerrit,renchaorevee/gerrit,GerritCodeReview/gerrit,Distrotech/gerrit,jackminicloud/test,gcoders/gerrit,renchaorevee/gerrit,quyixia/gerrit,evanchueng/gerrit,netroby/gerrit,zommarin/gerrit,zommarin/gerrit,netroby/gerrit,sudosurootdev/gerrit,thesamet/gerrit,Seinlin/gerrit,gerrit-review/gerrit,makholm/gerrit-ceremony,GerritCodeReview/gerrit,hdost/gerrit,GerritCodeReview/gerrit,joshuawilson/merrit,WANdisco/gerrit,joshuawilson/merrit,duboisf/gerrit,jeblair/gerrit