Fix PR24099 reported by Tomas Brukner.

llvm-svn: 241997
diff --git a/llvm/docs/ProgrammersManual.rst b/llvm/docs/ProgrammersManual.rst
index ceb39e1..08cc61a 100644
--- a/llvm/docs/ProgrammersManual.rst
+++ b/llvm/docs/ProgrammersManual.rst
@@ -1868,7 +1868,7 @@
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Iterating over the predecessors and successors of a block is quite easy with the
-routines defined in ``"llvm/Support/CFG.h"``.  Just use code like this to
+routines defined in ``"llvm/IR/CFG.h"``.  Just use code like this to
 iterate over all predecessors of BB:
 
 .. code-block:: c++