Correct date of file.

diff --git a/blog/data/2015-08-19-free-culture-paper-draft.txt b/blog/data/2015-08-09-free-culture-paper-draft.txt
similarity index 100%
rename from blog/data/2015-08-19-free-culture-paper-draft.txt
rename to blog/data/2015-08-09-free-culture-paper-draft.txt