fixup! Improve backwards compatibility for H5.load with deprecation warning

Author: schmoelder

cadet/h5.py

@@ -116,8 +116,8 @@ def load(
             If True, uses a file lock while loading.
         """
         warnings.warn(
-            "Deprecation warning: Support for setting cadet.cadet_path will be removed "
-            " in a future version. Use `install_path` instead.",
+            "Deprecation warning: Support for `load` will be removed in a future "
+            "version. Use `load_from_file` instead.",
             FutureWarning
         )
         self.load_from_file(paths=paths, update=update, lock=lock)