Update save_load.py

ppocr/utils/save_load.py

@@ -116,7 +116,7 @@ def init_model(config, program, exe):
         else:
             raise ValueError(
                 "Model checkpoints {} does not exists,"
-                "check if you lost the file prefix .".format(checkpoints + '.pdparams'))
+                "check if you lost the file prefix.".format(checkpoints + '.pdparams'))
 
     pretrain_weights = config['Global'].get('pretrain_weights')
     if pretrain_weights: