fix smaller stuff

- change filename option in example config file
- adapt default filename format for mangafox
- remove unnecessary newline

[skip ci]

docs/gallery-dl.conf

@@ -16,7 +16,7 @@
         {
             "user":
             {
-                "directory": ["{category}", "{artist-id}"]
+                "directory": ["{category}", "{user[id]}"]
             },
             "bookmark":
             {

gallery_dl/__init__.py

@@ -102,7 +102,6 @@ def main():
             log.debug("Version %s", __version__)
             log.debug("Python %s - %s",
                       platform.python_version(), platform.platform())
-            print(file=sys.stderr)
 
         if args.list_modules:
             for module_name in extractor.modules:

gallery_dl/extractor/mangafox.py

@@ -18,7 +18,7 @@ class MangafoxChapterExtractor(AsynchronousExtractor):
     category = "mangafox"
     subcategory = "chapter"
     directory_fmt = ["{category}", "{manga}", "c{chapter:>03}{chapter_minor}"]
-    filename_fmt = ("{manga}_c{chapter:>03}{chapter-minor}_"
+    filename_fmt = ("{manga}_c{chapter:>03}{chapter_minor}_"
                     "{page:>03}.{extension}")
     pattern = [(r"(?:https?://)?(?:www\.)?(mangafox\.me/manga/"
                 r"[^/]+/(v\d+/)?c\d+[^/]*)")]