docs(meta): Improve warning no logfile message

src/agora/io/metadata.py

@@ -90,7 +90,7 @@ def find_file(root_dir, regex):
         )
         file = [sorted(file)[0]]
     if len(file) == 0:
-        print("Warning:Metadata: No valid logfile found.")
+        print("Warning:Metadata: No valid swainlab .log found.")
     else:
         return file[0]
     return None