fix typo

docs/faq.rst

@@ -267,7 +267,7 @@ your object**. Mutations of objects used as hash keys lead to several subtle pro
 which is why for example mutable Python containers (e.g. :class:`dict`, :class:`list`)
 don't define ``__hash__``, while their immutable counterparts (e.g. :class:`tuple`) do.
 
-If your class relies on in-place mutations (such as setting ```self.attr = ...`` within its
+If your class relies on in-place mutations (such as setting ``self.attr = ...`` within its
 methods), then your object is not really "static" and marking it as such may lead to problems.
 Fortunately, there's another option for this case.