Move release date in HISTORY

Signed-off-by: Jonas Pfefferle <pepperjo@apache.org>
diff --git a/HISTORY.md b/HISTORY.md
index cf69dd4..aeec25b 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -17,7 +17,7 @@
 {% endcomment %}
 -->
 
-## [1.0](https://github.com/apache/incubator-crail/tree/v1.0) - 27.04.2018
+## [1.0](https://github.com/apache/incubator-crail/tree/v1.0) - 23.05.2018
 
 This is our first Apache incubator release. Below are new features and bug fixes since the import to Apache.