[fractal] chore: Fix docs generation in CI

[Kévin Commaille <kcommaille src gnome org>]

commit 544b3d9b3fe500d1b181b233e10336c414fb4835
Author: Kévin Commaille <zecakeh tedomum fr>
Date:   Tue Aug 9 09:10:01 2022 +0200

    chore: Fix docs generation in CI

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1401954da..acaad9ac3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -136,7 +136,7 @@ pages:
   tags:
     - flatpak
   script:
-    - flatpak install --user --noninteractive org.freedesktop.Sdk.Extension.rust-nightly//21.08
+    - flatpak install --user --noninteractive org.freedesktop.Sdk.Extension.rust-nightly//22.08beta
     - sed -i 's|rust-stable|rust-nightly|g' ${MANIFEST_PATH}
     - flatpak-builder --keep-build-dirs --user --disable-rofiles-fuse --stop-at=${FLATPAK_MODULE} 
flatpak_app --repo=repo ${BRANCH:+--default-branch=$BRANCH} ${MANIFEST_PATH}
     - echo "ninja src/doc" | flatpak-builder --disable-rofiles-fuse --build-shell=${FLATPAK_MODULE} 
flatpak_app ${MANIFEST_PATH}