Fix rollback hint to reference a capture route that exists

crates/edgezero-cli/src/args.rs

@@ -381,8 +381,9 @@ pub struct RollbackArgs {
     /// Production only: the version to re-activate. Fastly exposes no
     /// metadata to tell a previously-live version from a staged one, so
     /// the rollback target CANNOT be inferred; it is captured before the
-    /// deploy that superseded it (see `deploy`'s `previous-version`) and
-    /// passed here. Required for a production rollback; ignored for staging.
+    /// deploy that superseded it (`active-version`, or the deploy-fastly
+    /// action's `previous-version` output) and passed here. Required for
+    /// a production rollback; ignored for staging.
     #[arg(long)]
     pub rollback_to: Option<String>,
     /// Platform service id to roll back. Required.

crates/edgezero-cli/src/lib.rs

@@ -516,8 +516,9 @@ pub fn run_rollback(args: &RollbackArgs) -> Result<(), String> {
         return Err(
             "a production rollback requires --rollback-to (the version to re-activate). Fastly \
              exposes no metadata to infer it, so it must be captured before the deploy that \
-             superseded it -- use `deploy`'s `previous-version` output. Pass --staging to \
-             deactivate a staged version instead."
+             superseded it -- run `active-version` before deploying (the deploy-fastly GitHub \
+             action does this and exposes it as its `previous-version` output). Pass --staging \
+             to deactivate a staged version instead."
                 .to_owned(),
         );
     }