[cogl] quaternion: Fix typo in the init_from_z_rotation documentation

[Damien Lespiau <dlespiau src gnome org>]

commit 2f06f4d79e29bbf30a44edbf48e8eaa637e30930
Author: Damien Lespiau <damien lespiau intel com>
Date:   Fri May 11 11:22:58 2012 +0100

    quaternion: Fix typo in the init_from_z_rotation documentation
    
    Clearly from a copy and paste from init_from_y_rotation().
    
    Reviewed-by: Robert Bragg <robert linux intel com>

 cogl/cogl-quaternion.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/cogl/cogl-quaternion.h b/cogl/cogl-quaternion.h
index 76cae29..398fe86 100644
--- a/cogl/cogl-quaternion.h
+++ b/cogl/cogl-quaternion.h
@@ -239,7 +239,7 @@ cogl_quaternion_init_from_y_rotation (CoglQuaternion *quaternion,
 /**
  * cogl_quaternion_init_from_z_rotation:
  * @quaternion: An uninitialized #CoglQuaternion
- * @angle: The angle to rotate around the y axis
+ * @angle: The angle to rotate around the z axis
  *
  *
  * Since: 2.0