add a 'generated by …' comment to supportedsites.rst

scripts/supportedsites.py

@@ -3,6 +3,7 @@
 
 """Generate a reStructuredText document with all supported sites"""
 
+import os
 import sys
 import collections
 
@@ -330,7 +331,9 @@ def write_output(fobj, columns, extractors):
     # caption
     w("Supported Sites\n")
     w("===============\n")
-    w("Unless otherwise known, assume all sites to be NSFW\n\n")
+    w("..\n    generated by {}\n\n".format(
+        "/".join(os.path.normpath(__file__).split(os.sep)[-2:])))
+    w("Consider all sites to be NSFW, unless otherwise known.\n\n")
 
     # table head
     sep = " ".join("=" * c[1] for c in columns) + "\n"