2015-09-24: fix: cholesky.w is now actually run.

fix: cholesky.w is now actually run.

diff --git a/examples/cholesky.w b/examples/cholesky.w
old mode 100644
new mode 100755
--- a/examples/cholesky.w
+++ b/examples/cholesky.w
@@ -6,7 +6,7 @@ exec guile -L $(dirname $(dirname $(real
 ;; Cholesky decomposition, following https://de.wikipedia.org/wiki/Cholesky-Zerlegung#Pseudocode
 
 define-module : examples cholesky
-              . #:exports : cholesky!
+              . #:export : cholesky!
 
 use-modules : guildhall ext foof-loop