Tweak ctags settings.

Author: Stefanus Du Toit

.ctags

@@ -1,6 +1,6 @@
 --langdef=latex
 --langmap=latex:.tex
---regex-latex=,\\rSec[0-9](\[[a-z0-9_.-]+\]),\1,
+--regex-latex=/\\rSec[0-9](\[[a-zA-Z0-9_.:-]+\])/\1/s,section/
 --exclude=*.html
 --exclude=*.cpp
 --exclude=Makefile