improve readme

Signed-off-by: Jason Hall <jason@chainguard.dev>

README.md

@@ -1,6 +1,6 @@
-# `octo-sts`
+# `octo-sts-action`
 
-This action federates the Github actions identity token for a Github App token
+This action federates the GitHub Actions identity token for a Github App token
 according to the Trust Policy in the target organization or repository.
 
 ## Usage
@@ -10,20 +10,14 @@ permissions:
   id-token: write # Needed to federate tokens.
 
 steps:
-- uses: chainguard-dev/actions/octo-sts@main
+- uses: chainguard-dev/octo-sts-action@main
   id: octo-sts
   with:
-    # environment determines the environment from which to download the chainctl
-    # binary from.
-    # Optional (default is enforce.dev)
     scope: your-org/your-repo
-
-    # identity holds the ID for the identity this workload should assume when
-    # speaking to Chainguard APIs.
     identity: foo
 
 - env:
-    GH_TOKEN: ${{ steps.octo-sts.outputs.token }}
+    GITHUB_TOKEN: ${{ steps.octo-sts.outputs.token }}
   run: |
     gh repo list
 ```
@@ -41,3 +35,5 @@ permissions:
   contents: read
   issues: write
 ```
+
+See the [Use Action](./.github/workflows/use-action.yaml) workflow for a working example of this, that opens an issue in this repository.