Correct publish date.

diff --git a/blog/data/2011-03-25-skolelinux-odin.txt b/blog/data/2011-03-28-skolelinux-odin.txt
similarity index 100%
rename from blog/data/2011-03-25-skolelinux-odin.txt
rename to blog/data/2011-03-28-skolelinux-odin.txt