fix: typo in var name inan unused (mostly) chameleon engine.

Author: rouilj

roundup/cgi/engine_chameleon.py

@@ -11,7 +11,7 @@
 class Loader(TALLoaderBase):
     def __init__(self, template_dir):
         self.template_dir = template_dir
-        self.loader = chameleon.PageTemplateLoader(tamplate_dir)
+        self.loader = chameleon.PageTemplateLoader(template_dir)
 
     def load(self, tplname):
         src, filename = self._find(tplname)