Fix secret name

Author: sarahsturgeon

README.md

@@ -97,7 +97,7 @@ For more information on inaccuracies, see issue
      workflow](https://github.com/jstrieb/github-stats/blob/master/.github/workflows/main.yml))
      called `EXCLUDE_FORKED_REPOS` with a value of `true`.
    - To generate statistics for a GitHub organization, add a new secret called
-     `GITHUB_ORG` with the name of the organization. Note that when this is set,
+     `ORGANIZATION_NAME` with the name of the organization. Note that when this is set,
      the statistics will be for the organization and not the user. Also, the
      `total_contributions`, `lines_changed`, and `views` statistics are not
      displayed for organizations.

generate_images.py

@@ -113,7 +113,7 @@ async def main() -> None:
     user = os.getenv("GITHUB_ACTOR")
     if user is None:
         raise RuntimeError("Environment variable GITHUB_ACTOR must be set.")
-    org = os.getenv("GITHUB_ORG")
+    org = os.getenv("ORGANIZATION_NAME")
     exclude_repos = os.getenv("EXCLUDED")
     excluded_repos = (
         {x.strip() for x in exclude_repos.split(",")} if exclude_repos else None