[LangRef] missing link, minor fix

Author: aqjune

llvm/docs/LangRef.rst

@@ -3667,12 +3667,12 @@ a poison value.
 
 Poison value behavior is defined in terms of value *dependence*:
 
--  Values other than :ref:`phi <i_phi>` nodes and :ref:`select <i_select>`
-   instructions depend on their operands.
+-  Values other than :ref:`phi <i_phi>` nodes, :ref:`select <i_select>`, and
+   :ref:`freeze <i_freeze>` instructions depend on their operands.
 -  :ref:`Phi <i_phi>` nodes depend on the operand corresponding to
    their dynamic predecessor basic block.
--  Select instructions depend on their condition operand and their
-   selected operand.
+-  :ref:`Select <i_select>` instructions depend on their condition operand and
+   their selected operand.
 -  Function arguments depend on the corresponding actual argument values
    in the dynamic callers of their functions.
 -  :ref:`Call <i_call>` instructions depend on the :ref:`ret <i_ret>`