releasing: Copyedit post-release branching directions

releasing.txt

@@ -81,14 +81,14 @@ To make a release of Weston and/or Wayland, follow these steps.
 
 For x.y.0 releases, also create the release series x.y branch.  The x.y
 branch is for bug fixes and conservative changes to the x.y.0 release,
-and is where we release x.y.z releases from.  Creating the x.y branch
+and is where we create x.y.z releases from.  Creating the x.y branch
 opens up master for new development and lets new development move on.
 We've done this both after the x.y.0 release (to focus development on
 bug fixing for the x.y.1 release for a little longer) or before the
 x.y.0 release (like we did with the 1.5.0 release, to unblock master
 development early).
 
-    $ git branch x.y
+    $ git branch x.y [sha]
     $ git push origin x.y
 
 The master branch configure.ac version should always be (at least)