[obsolete] rationalize doc header.
diff --git a/hgext/obsolete.py b/hgext/obsolete.py
--- a/hgext/obsolete.py
+++ b/hgext/obsolete.py
@@ -88,7 +88,7 @@ from mercurial import error
from mercurial.node import hex, bin
from mercurial.lock import release
-# Patch changectx
+### Patch changectx
#############################
def obsolete(ctx):
@@ -112,7 +112,7 @@ def hidden(ctx):
return ohidden(ctx)
context.changectx.hidden = hidden
-# revset
+### revset
#############################
def revsetobsolete(repo, subset, x):