Document that when generating documentation, we need the code gallery.

diff --git a/release-tasks b/release-tasks
index 528d420c226b74e4ea5d904e6c795d03d795d589..4aad7519a8cb5ed0180b9110f230e54ddf1e0f6f 100644 (file)
--- a/release-tasks
+++ b/release-tasks
@@ -398,6 +398,7 @@ Thanks!
      don't trip up any exceptions.
 
 11/ In a clean source directory of the dealii-9.0 branch, do
+      git clone https://github.com/dealii/code-gallery.git
       mkdir builddoc
       cd builddoc
       cmake -DDEAL_II_COMPONENT_DOCUMENTATION=ON -DCMAKE_INSTALL_PREFIX=$PWD/../installeddoc ../