fix config padding

cube/User/Inc/config.h

@@ -22,7 +22,7 @@ typedef struct __attribute__((__packed__)) s_configBlock {
             char key[65];     // the actual key may have up to 64 chars and has to end with a \0
         } wifi;
     } networkspecific;
-    uint8_t filler[15];
+    uint8_t filler[11];
 } t_configBlock;