doc: group pretty-format.txt placeholders descriptions

diff --git a/Documentation/merge-options.txt b/Documentation/merge-options.txt
index 3888c3ff85e2dc5b137e4e3ed50e39327760a02a..63a3fc09548abe8d34faab98f183e1817b21b878 100644 (file)
--- a/Documentation/merge-options.txt
+++ b/Documentation/merge-options.txt
@@ -35,7 +35,8 @@ set to `no` at the beginning of them.
 --no-ff::
        Create a merge commit even when the merge resolves as a
        fast-forward.  This is the default behaviour when merging an
-       annotated (and possibly signed) tag.
+       annotated (and possibly signed) tag that is not stored in
+       its natural place in 'refs/tags/' hierarchy.
 
 --ff-only::
        Refuse to merge and exit with a non-zero status unless the