[dsymutil] Add a manpage for dsymutil

llvm-svn: 317221
diff --git a/llvm/docs/CommandGuide/llvm-dwarfdump.rst b/llvm/docs/CommandGuide/llvm-dwarfdump.rst
index a3b6266..4e77915 100644
--- a/llvm/docs/CommandGuide/llvm-dwarfdump.rst
+++ b/llvm/docs/CommandGuide/llvm-dwarfdump.rst
@@ -139,4 +139,4 @@
 SEE ALSO
 --------
 
-:manpage:`dsymutil(1)`
+:manpage:`llvm-dsymutil(1)`