Spell `necessary' correctly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7944 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/OpenProjects.html b/docs/OpenProjects.html
index 740c9db..574f4d3 100644
--- a/docs/OpenProjects.html
+++ b/docs/OpenProjects.html
@@ -92,7 +92,7 @@
 
 <li>Graphs - It would be great to have gnuplot graphs to keep track of how the
     tree is changing over time.  We already gather a several statistics, it
-    just neccesary to add the script-fu to gnuplotize it.
+    just necessary to add the script-fu to gnuplotize it.
 
 <li>Regression tests - We should run the regression tests in addition to the
     program tests...