[gimp-web/oscp] Use correct variable name to set languages

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit 3a3d4c1771697faeb90dc0bf6ad348c6ed8c6096
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Wed Mar 18 15:53:16 2020 +0100

    Use correct variable name to set languages

 docs.gimp.org/docs_build/entrypoint.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/docs.gimp.org/docs_build/entrypoint.sh b/docs.gimp.org/docs_build/entrypoint.sh
index fc8f7ce2..f02273a6 100755
--- a/docs.gimp.org/docs_build/entrypoint.sh
+++ b/docs.gimp.org/docs_build/entrypoint.sh
@@ -4,7 +4,7 @@ set -x
 set -e
 
 git clone --depth 1 https://gitlab.gnome.org/GNOME/gimp-help.git /tmp/gimp-help
-export LANGUAGES="ca da de el en en_GB es fi fr hr it ja ko lt nl nn pt_BR ro ru sv zh_CN"
+export ALL_LINGUAS="ca da de el en en_GB es fi fr hr it ja ko lt nl nn pt_BR ro ru sv zh_CN"
 cd /tmp/gimp-help && ./autogen.sh --without-gimp && make
 
 rsync -rl /tmp/gimp-help/html/* /docs_data