fix: use Microsoft copyright header per imran-siddique review

Per @imran-siddique in microsoft#1205, swap the Tom Farley (ScopeBlind) header
for the repo's standard Microsoft Corporation / MIT License header.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: ZeroXLauren

examples/sb-runtime-governed/getting_started.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2026 Tom Farley (ScopeBlind).
+# Copyright (c) Microsoft Corporation.
 # Licensed under the MIT License.
 
 """