Fix doc typo
"trampoline" is doubled in the first sentence.
diff --git a/docs/advanced.rst b/docs/advanced.rst
index 382fdf3..8e1f7c3 100644
--- a/docs/advanced.rst
+++ b/docs/advanced.rst
@@ -327,10 +327,10 @@
return m.ptr();
}
-Importantly, pybind11 is made aware of the trampoline trampoline helper class
-by specifying it as an extra template argument to :class:`class_`. (This can
-also be combined with other template arguments such as a custom holder type;
-the order of template types does not matter). Following this, we are able to
+Importantly, pybind11 is made aware of the trampoline helper class by
+specifying it as an extra template argument to :class:`class_`. (This can also
+be combined with other template arguments such as a custom holder type; the
+order of template types does not matter). Following this, we are able to
define a constructor as usual.
Note, however, that the above is sufficient for allowing python classes to