typo fixed

debian/changelog

 python-defaults (2.7.2-1) experimental; urgency=low
 
   [ Piotr Ożarowski ]
-  * dh_pythno2: generate more strict dependencies for packages with private
+  * dh_python2: generate more strict dependencies for packages with private
     extensions (closes: #625760)
 
   [ Scott Kitterman ]

dh_python2

@@ -583,7 +583,7 @@ def main():
             else:
                 version = ext_for.pop()
                 args += " -V %s" % vrepr(version)
-                dependencies.depend("python%d.%d" % version)
+            dependencies.depend("python%d.%d" % version)
 
             for pattern in options.regexpr or []:
                 args += " -X '%s'" % pattern.replace("'", r"\'")