misc/kate: fix multiline raw string syntax highlighting error. From VisualFC. Fixes issue 4862.
misc/kate: fix multiline raw string syntax highlighting error.
From VisualFC.
Fixes issue 4862.

R=golang-dev, minux.ma, r
CC=golang-dev
https://codereview.appspot.com/7568043

Committer: Rob Pike <4dc7c9ec434ed06502767136789763ec11d2c4b7@golang.org>

wesolows/golang-old,wesolows/golang,firebitsbr/golang-old,wesolows/golang-old,wesolows/golang,wesolows/golang-old,wesolows/golang,firebitsbr/golang-old,wesolows/golang-old,wesolows/golang,wesolows/golang,wesolows/golang,wesolows/golang-old,firebitsbr/golang-old,firebitsbr/golang-old,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang,wesolows/golang-old,wesolows/golang-old,firebitsbr/golang-old,firebitsbr/golang-old