fixed typos

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212355 91177308-0d34-0410-b5e6-96231b3b80d8

docs/LangRef.rst

@@ -8842,15 +8842,15 @@ Semantics:
 """"""""""
 
 On some architectures the address of the code to be executed needs to be
-different to the address where the trampoline is actually stored. This
+different than the address where the trampoline is actually stored. This
 intrinsic returns the executable address corresponding to ``tramp``
 after performing the required machine specific adjustments. The pointer
 returned can then be :ref:`bitcast and executed <int_trampoline>`.
 
 Memory Use Markers
 ------------------
 
-This class of intrinsics exists to information about the lifetime of
+This class of intrinsics provides information about the lifetime of
 memory objects and ranges where variables are immutable.
 
 .. _int_lifestart: