Add comment on how to enable dev-bootstrap-roots for dev environment

Author: lukevalenta

crates/mtc_worker/wrangler.jsonc

@@ -15,7 +15,10 @@
         "dev": {
             "build": {
                 // Change '--release' to '--dev' to compile with debug symbols.
-                // DEPLOY_ENV is used in build.rs to select per-environment config and roots.
+                // DEPLOY_ENV is used in build.rs to select per-environment
+                // config and roots. Add `--features dev-bootstrap-roots` to the
+                // worker-build command to enable dev bootstrap roots (which
+                // should NOT be enabled in a production deployment).
                 "command": "cargo install -q worker-build && DEPLOY_ENV=dev worker-build --release"
             },
             "workers_dev": true,
@@ -113,4 +116,4 @@
             ]
         }
     }
-}
+}