New translations firefly.php (Spanish)

resources/lang/es_ES/firefly.php

@@ -957,7 +957,10 @@ return [
     'this_transaction'                      => 'This transaction',
     'transaction'                           => 'Transaction',
     'comments'                              => 'Comments',
-
+    'to_link_not_found'                     => 'If the transaction you want to link to is not listed, simply enter its ID.',
+    'invalid_link_data'                     => 'Invalid link type selected. Cannot link transaction.',
+    'journals_linked'                       => 'Transactions are linked.',
+    'journals_error_linked'                 => 'These journals are already linked.',
 
     // split a transaction:
     'transaction_meta_data'                 => 'Transaction meta-data',