Tidy up. s/Low Level Virtual Machine/LLVM/.

LLVM isn't an acronym anymore.

llvm-svn: 148985
diff --git a/llvm/docs/doxygen.intro b/llvm/docs/doxygen.intro
index 547730c..699dadc 100644
--- a/llvm/docs/doxygen.intro
+++ b/llvm/docs/doxygen.intro
@@ -1,7 +1,7 @@
-/// @mainpage Low Level Virtual Machine
+/// @mainpage LLVM
 ///
 /// @section main_intro Introduction
-/// Welcome to the Low Level Virtual Machine (LLVM).
+/// Welcome to LLVM.
 ///
 /// This documentation describes the @b internal software that makes 
 /// up LLVM, not the @b external use of  LLVM. There are no instructions