smooth-dl.py: fix documentation for get_manifest()

diff --git a/smooth-dl.py b/smooth-dl.py
index 4fdbca1..eda931a 100755 (executable)
--- a/smooth-dl.py
+++ b/smooth-dl.py
@@ -110,7 +110,7 @@ def download_file(src_url, dest_file, mode):
 
 
 def get_manifest(url, dest_dir=tempfile.gettempdir()):
-    """Returns the manifest and the new URL if this is changed"""
+    """Returns the manifest element and the base content URL"""
 
     if not os.path.exists(dest_dir):
         os.mkdir(dest_dir, 0755)