docs: fix SCIM env var (coder#14618)

ericpaulsen · web-flow · commit eb646f036e4d · 2024-09-09T11:14:51.000-04:00
diff --git a/docs/admin/auth.md b/docs/admin/auth.md
@@ -236,7 +236,7 @@ authentication. Upon deactivation, users are
 the Coder server.
 
 ```env
-CODER_SCIM_API_KEY="your-api-key"
+CODER_SCIM_AUTH_HEADER="your-api-key"
 ```
 
 ## TLS
