- Cleaned up header documentation

diff --git a/include/polarssl/padlock.h b/include/polarssl/padlock.h
index 692b792..fc8941c 100644
--- a/include/polarssl/padlock.h
+++ b/include/polarssl/padlock.h
@@ -44,6 +44,8 @@
 /**
  * \brief          PadLock detection routine
  *
+ * \param          The feature to detect
+ *
  * \return         1 if CPU has support for the feature, 0 otherwise
  */
 int padlock_supports( int feature );