git-log.txt: order OPTIONS properly; move <since>..<until>

The OPTIONS section lists <since>..<until> as the first item, but this
is inconsistent with the ordering in SYNOPSIS.  Move it down until it
appears just before [[--] <path>...].

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-log.txt

@@ -24,13 +24,6 @@ each commit introduces are shown.
 OPTIONS
 -------
 
-<since>..<until>::
-	Show only commits between the named two commits.  When
-	either <since> or <until> is omitted, it defaults to
-	`HEAD`, i.e. the tip of the current branch.
-	For a more complete list of ways to spell <since>
-	and <until>, see linkgit:gitrevisions[7].
-
 --follow::
 	Continue listing the history of a file beyond renames
 	(works only for a single file).
@@ -69,6 +62,13 @@ produced by --stat etc.
 	Note that only message is considered, if also a diff is shown
 	its size is not included.
 
+<since>..<until>::
+	Show only commits between the named two commits.  When
+	either <since> or <until> is omitted, it defaults to
+	`HEAD`, i.e. the tip of the current branch.
+	For a more complete list of ways to spell <since>
+	and <until>, see linkgit:gitrevisions[7].
+
 [\--] <path>...::
 	Show only commits that are enough to explain how the files
 	that match the specified paths came to be.  See "History