Fix spelling of 'separate'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23971 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/CodeGenerator.html b/docs/CodeGenerator.html
index 4913986..406d77c 100644
--- a/docs/CodeGenerator.html
+++ b/docs/CodeGenerator.html
@@ -1117,7 +1117,7 @@
 Selection DAG is destroyed.
 </p>
 
-<p>Note that this phase is logically seperate from the instruction selection
+<p>Note that this phase is logically separate from the instruction selection
 phase, but is tied to it closely in the code because it operates on
 SelectionDAGs.</p>