Fix typo.

theano/gof/link.py

@@ -294,7 +294,7 @@ def raise_with_op(node, thunk=None, exc_info=None, storage_map=None):
                 detailed_err_msg += "\n"
         detailed_err_msg += " TotalSize: %s Byte(s) %.3f GB\n" % (
             total_size, total_size / 1024. / 1024 / 1024)
-        detailed_err_msg += " TotalSize inputs: %s Byte(s) %.3f BG\n" % (
+        detailed_err_msg += " TotalSize inputs: %s Byte(s) %.3f GB\n" % (
             total_size_inputs, total_size_inputs / 1024. / 1024 / 1024)
 
     else: