Fix example - it means what it says

1 files changed, 1 insertions, 1 deletions

diff --git a/UPGRADING b/UPGRADING
index f0b0acaf01..e94fed1cb1 100755
--- a/UPGRADING
+++ b/UPGRADING
@@ -285,7 +285,7 @@ UPGRADE NOTES - PHP 5.3
   Static HEREDOCs can be used to initialize static variables and class members
   or constants:
 
-      static $foo = <<<'LABEL'
+      static $foo = <<<LABEL
       No variables here...
       LABEL;