another typo

llvm-svn: 81243
diff --git a/llvm/docs/LangRef.html b/llvm/docs/LangRef.html
index b0bb562..b3e5813 100644
--- a/llvm/docs/LangRef.html
+++ b/llvm/docs/LangRef.html
@@ -2136,7 +2136,7 @@
 not (currently) defined on SNaN's.  However, in the second example, we can make
 a more aggressive assumption: because the undef is allowed to be an arbitrary
 value, we are allowed to assume that it could be zero.  Since a divide by zero
-it has <em>undefined behavior</em>, we are allowed to assume that the operation
+has <em>undefined behavior</em>, we are allowed to assume that the operation
 does not execute at all.  This allows us to delete the divide and all code after
 it: since the undefined operation "can't happen", the optimizer can assume that
 it occurs in dead code.