Updated test procedure.

doc/tp/tp-account-migration-from-snac-to-mastodon.md → doc/tp/tp-01-account-migration-from-snac-to-mastodon.md

@@ -1,4 +1,4 @@
-# Test Procedure - Account migration from snac to Mastodon
+# Test Procedure - 01. Account migration from snac to Mastodon
 
 ## Prerequisites