[sysadmin-bin] Fix typo

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit daac612b278b5c2f4c9ebcfb7fc0b5ca11bb8214
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Tue Oct 29 09:53:51 2019 +0100

    Fix typo

 git/post-receive-mirror-github | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/git/post-receive-mirror-github b/git/post-receive-mirror-github
index 8d75ead..64474dd 100755
--- a/git/post-receive-mirror-github
+++ b/git/post-receive-mirror-github
@@ -248,7 +248,7 @@ def main():
     if 'master' in github_branches:
         run_command("git push --force git github com:{}/{} :master".format(gh.organization, 
github_repo_name))
 
-    for org in ADITIONAL_ORGANIZATIONS.get(repo_name, []):
+    for org in ADDITIONAL_ORGANIZATIONS.get(repo_name, []):
         run_command("git push --mirror git github com:{}/{}".format(org, github_repo_name))