fix(rtm): Fix link swap on RTM CACTUS

! This change has impacts, configuration scripts must be updated !

* line 16-17 were swapped
* This was already corrected on the configuration script side.

src/app_fofbnode/hdl/rtm_cactus_top.vhd

@@ -43,8 +43,8 @@ begin
     c2c_data_n(8)  <= rtm_tx_en(4);
     c2c_data_p(9)  <= rtm_tx(18);
     c2c_data_n(9)  <= rtm_tx(19);
-    c2c_data_p(10) <= rtm_tx(17);
-    c2c_data_n(10) <= rtm_tx(16);
+    c2c_data_p(10) <= rtm_tx(16);
+    c2c_data_n(10) <= rtm_tx(17);
     c2c_data_p(11) <= rtm_tx_en(3);
     c2c_data_n(11) <= rtm_tx(14);
     c2c_data_p(12) <= rtm_tx(15);