[tracker/sam/website-docs-fix] website: Set shell variables correctly

[Sam Thursfield <sthursfield src gnome org>]

commit 3635fa295b53f152c1696488f9ffae14b19db9f0
Author: Sam Thursfield <sam afuera me uk>
Date:   Wed Apr 22 20:08:33 2020 +0200

    website: Set shell variables correctly

 .gitlab-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a56b10b15..2ae7550d6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -95,8 +95,8 @@ pages:
     - su tracker -w install_prefix -c 'cd extra/tracker-miners; mkdir build; cd build; env 
PKG_CONFIG_PATH="$install_prefix/lib64/pkgconfig" meson .. --prefix="$install_prefix"; ninja install'
     # Generate the website using mkdocs.
     - |
-      tracker_commit=$CI_COMMIT_SHA1
-      tracker_miners_commit=$(git -C ./extra/tracker-miners rev-parse HEAD)
+      export tracker_commit=$CI_COMMIT_SHA1
+      export tracker_miners_commit=$(git -C ./extra/tracker-miners rev-parse HEAD)
       ./docs/website/build.py --api-docs="$install_prefix/share/gtk-doc/html" 
--tracker-commit=${tracker_commit} --man-pages ./docs/manpages/*.txt 
./extra/tracker-miners/docs/manpages/*.txt
   artifacts:
     paths: