doc:tutorial: use a Git tag for the `be diff` example

I haven't tagged 1.1.0 yet, but earlier tags do not use Bugs
Everywhere Directory v1.5, and we don't have on-the-fly storage
updates yet.

diff --git a/doc/tutorial.txt b/doc/tutorial.txt
index 9a60473754bc52cb5000ae22a6b85a86a14e10fd..2e4d949722de50fc455d0e6ec746eddf7de7cb50 100644 (file)
--- a/doc/tutorial.txt
+++ b/doc/tutorial.txt
@@ -263,15 +263,21 @@ compare your working tree with the last commit::
         Changed bug settings:
           creator: None -> W. Trevor King <wking@drexel.edu>
 
-Compare with a previous revision ``480``::
+Compare with a previous revision ``1.1.0``::
 
-    $ be diff 480
+    $ be diff 1.1.0
     ...
 
+The format of revision names passed to ``diff`` will depend on your
+VCS.  For Git, look to gitrevisions_ for inspiration.
+
 Compare your BE branch with the trunk::
 
     $ be diff --repo http://bugs.bugseverywhere.org/
 
+.. _gitrevisions:
+   http://www.kernel.org/pub/software/scm/git/docs/gitrevisions.html
+
 Manipulating bugs
 -----------------