Added note to Compose file about specification compliance

compose.yaml

@@ -2,6 +2,10 @@
 # authors:
 #  - tycrek <t@tycrek.com> (https://tycrek.com/)
 #  - Zusier <zusier@pm.me> (https://github.com/Zusier)
+#
+# This file is designed to follow the latest Compose specification, defined here: https://github.com/compose-spec/compose-spec/blob/master/spec.md
+# Specific thing(s) to note:
+# - The filename, `compose.yaml`: "The default path for a Compose file is compose.yaml (preferred)" (https://github.com/compose-spec/compose-spec/blob/master/spec.md#compose-file)
 
 services:
   ass: