[doc] Fix bad reference.
--- a/doc/book/en/A02b-components.en.txt Thu Apr 23 14:05:55 2009 -0700
+++ b/doc/book/en/A02b-components.en.txt Tue May 05 02:02:58 2009 -0700
@@ -70,7 +70,7 @@
database with your model. For this purpose, `CubicWeb` provides
a very useful command ``cubicweb-ctl shell blogdemo`` which
launches an interactive migration Python shell. (see
-:ref:`cubicweb-ctl-shell` for more details))
+:ref:`cubicweb-ctl` for more details))
As you modified a relation from the `BlogEntry` schema,
run the following command:
::