Fix spelling mistake

Change-Id: Iefe4bb24e0531d589eeb882cfe2fd7576a23f579
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
diff --git a/presentations/git-gerrit-workshop/commit-message.txt b/presentations/git-gerrit-workshop/commit-message.txt
index c2da077..67620f8 100644
--- a/presentations/git-gerrit-workshop/commit-message.txt
+++ b/presentations/git-gerrit-workshop/commit-message.txt
@@ -19,4 +19,4 @@
 [role="incremental"]
 * first line is header
 * separated by a blank line follows the body
-* last paragraph is for meta dat in the `key: value` format
+* last paragraph is for meta data in the `key: value` format