[cogl] doc: fix the name of the cogl_quaternion_equal args

[Robert Bragg <rbragg src gnome org>]

commit 47da69cc3ebaa68a826491c6f8235d60102523b0
Author: Robert Bragg <robert linux intel com>
Date:   Mon May 16 16:21:35 2011 +0100

    doc: fix the name of the cogl_quaternion_equal args

 cogl/cogl-quaternion.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/cogl/cogl-quaternion.h b/cogl/cogl-quaternion.h
index 33ca984..e1142c4 100644
--- a/cogl/cogl-quaternion.h
+++ b/cogl/cogl-quaternion.h
@@ -253,8 +253,8 @@ cogl_quaternion_init_from_euler (CoglQuaternion *quaternion,
 
 /**
  * cogl_quaternion_equal:
- * @a: A #CoglQuaternion
- * @b: A #CoglQuaternion
+ * @v1: A #CoglQuaternion
+ * @v2: A #CoglQuaternion
  *
  * Compares that all the components of quaternions @a and @b are
  * equal.