Max positional embedding causes error when exceeding 512.

config.json

@@ -13,7 +13,7 @@
   "initializer_range": 0.02,
   "intermediate_size": 3072,
   "layer_norm_eps": 1e-05,
-  "max_position_embeddings": 514,
+  "max_position_embeddings": 512,
   "model_type": "xlm-roberta",
   "num_attention_heads": 12,
   "num_hidden_layers": 12,