Rewrote the links to the documentation of Theano classes

doc/extending/other_ops.txt

@@ -254,8 +254,7 @@ along with pointers to the relevant documentation.
         array containing elements that all have the same type. Variables of
         this Theano type are representedin C as objects of class
         `PyArrayObject <http://docs.scipy.org/doc/numpy/reference/c-api.types-and-structures.html#PyArrayObject>`_.
-        The documentation for TensorType can be found
-        :class:`here <tensor.TensorType>`.
+        The :class:`TensorType documentation <tensor.TensorType>`.
 
 *       TypedList : Theano type that represents a typed list (a list where
         every element in the list has the same Theano type). Variables of this
@@ -279,10 +278,9 @@ along with pointers to the relevant documentation.
         Variables of this Theano type are represented in C as objects of class
         `PyObject
         <https://docs.python.org/2/c-api/structures.html#c.PyObject>`_. The
-        documentation for Generic can be found
-        :class:`here <theano.gof.type.Generic>`.
+        :class:`Generic documentation <theano.gof.type.Generic>`.
 
 *       CDataType :  Theano type that represents a C data type. The C type
         associated with this Theano type depends on the data being
-        represented.The documentation for CDataType can be found
-        :class:`here <theano.gof.type.CDataType>`.
+        represented.The :class:`CDataType documentation
+        <theano.gof.type.CDataType>`.