fix old docstring

Author: mustafasoylu

src/somesy/codemeta/__init__.py

@@ -1,4 +1,4 @@
-"""Integration with codemetapy (to re-generate codemeta as part of somesy sync)."""
+"""Integration with codemeta.json (to re-generate codemeta as part of somesy sync)."""
 from .writer import Codemeta
 
 __all__ = ["Codemeta"]