fix typos in 2.15.0 release notes

diff --git a/Documentation/git-merge.txt b/Documentation/git-merge.txt
index 1d97a17904f002d57cf90a90d4748664f7ad0db1..3c6927b1fb87940c53ff01339a297d6b85dc1676 100644 (file)
--- a/Documentation/git-merge.txt
+++ b/Documentation/git-merge.txt
@@ -64,6 +64,14 @@ OPTIONS
 -------
 include::merge-options.txt[]
 
+--signoff::
+       Add Signed-off-by line by the committer at the end of the commit
+       log message.  The meaning of a signoff depends on the project,
+       but it typically certifies that committer has
+       the rights to submit this work under the same license and
+       agrees to a Developer Certificate of Origin
+       (see http://developercertificate.org/ for more information).
+
 -m <msg>::
        Set the commit message to be used for the merge commit (in
        case one is created).
@@ -127,7 +135,7 @@ exception is when the changed index entries are in the state that
 would result from the merge already.)
 
 If all named commits are already ancestors of `HEAD`, 'git merge'
-will exit early with the message "Already up-to-date."
+will exit early with the message "Already up to date."
 
 FAST-FORWARD MERGE
 ------------------