diff --git a/llvm/docs/HowToSetUpLLVMStyleRTTI.rst b/llvm/docs/HowToSetUpLLVMStyleRTTI.rst
--- a/llvm/docs/HowToSetUpLLVMStyleRTTI.rst
+++ b/llvm/docs/HowToSetUpLLVMStyleRTTI.rst
@@ -494,6 +494,7 @@
 invalid.
 
 .. code-block:: c++
+
   class SomeValue {
   public:
     SomeValue(void *ptr) : ptr(ptr) {}
@@ -509,6 +510,7 @@
 we can use some provided cast traits like so:
 
 .. code-block:: c++
+
   template<typename T>
   struct CastInfo<T, SomeValue>
     : public CastIsPossible<T, SomeValue>,
@@ -525,6 +527,7 @@
 that type from a char pointer type. So what we would do in that case is:
 
 .. code-block:: c++
+
   template<typename T>
   struct CastInfo<SomeValue, T *>
     : public NullableValueCastFailed<SomeValue>,
@@ -547,6 +550,7 @@
 In those cases, you probably want something like this:
 
 .. code-block:: c++
+
   template<typename T>
   struct CastInfo<T, SomeValue>
     : public OptionalValueCast<T, SomeValue> {};
@@ -555,12 +559,14 @@
 but it enables casting like so:
 
 .. code-block:: c++
+
   SomeValue someVal = ...;
   Optional<AnotherValue> valOr = dyn_cast<AnotherValue>(someVal);
 
 With the ``_is_present`` variants, you can even do optional chaining like this:
 
 .. code-block:: c++
+
   Optional<SomeValue> someVal = ...;
   Optional<AnotherValue> valOr = dyn_cast_if_present<AnotherValue>(someVal);