Minor grammar fix.

llvm-svn: 43154
diff --git a/clang/docs/InternalsManual.html b/clang/docs/InternalsManual.html
index 64497b9..cc4630a 100644
--- a/clang/docs/InternalsManual.html
+++ b/clang/docs/InternalsManual.html
@@ -458,7 +458,7 @@
 the <tt>CFGBlock::*iterator</tt> interface.</p>
 
 <p>
-A <tt>CFG</tt> objects owns the instances of <tt>CFGBlock</tt> within
+A <tt>CFG</tt> object owns the instances of <tt>CFGBlock</tt> within
 the control-flow graph it represents.  Each <tt>CFGBlock</tt> within a
 CFG is also uniquely numbered (accessible
 via <tt>CFGBlock::getBlockID()</tt>).  Currently the number is