[gegl] Fix property name to match recent typo fix, as pointed out in #760629

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit eedd0d4052f6605edefb4a22bbf7d1930d18efc6
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Fri Jan 15 01:23:23 2016 +0300

    Fix property name to match recent typo fix, as pointed out in #760629

 tests/compositions/noise-solid.xml |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/compositions/noise-solid.xml b/tests/compositions/noise-solid.xml
index ca55faf..08d5c00 100644
--- a/tests/compositions/noise-solid.xml
+++ b/tests/compositions/noise-solid.xml
@@ -13,7 +13,7 @@
         <param name='x-size'>5.00</param>
         <param name='y-size'>5.00</param>
         <param name='detail'>10</param>
-        <param name='tilable'>true</param>
+        <param name='tileable'>true</param>
         <param name='turbulent'>true</param>
         <param name='seed'>0</param>
         <param name="width">100</param>