docu: fix ksAtCursor docu
see
@@ -1565,10 +1565,12 @@ cursor_t ksGetCursor (const KeySet * ks)
}
/**
- * @brief return key at given cursor position
+ * @brief return key at given position
*
- * @param ks the keyset to pop key from
- * @param pos where to get
+ * The position is a number starting from 0.
+ *
+ * @param ks the keyset to access
+ * @param pos where to get the key
* @return the key at the cursor position on success
* @retval NULL on NULL pointer, negative cursor position
* or a position that does not lie within the keyset
