saving example_id correctly (see import of corpus example)

src/message/ske_messages.py

@@ -220,7 +220,7 @@ class SkeInsert(DataChgClickMessage):
     def _as_corpus_example(self, example):
         new_example = Example()
         new_example.inner = CorpusExample()
-        new_example.inner.other_attributes["exampleId"] = example.s_id
+        new_example.inner.other_attributes["example_id"] = example.s_id
         new_example.inner.cluster = ExampleClusters.first_empty_cluster()
         
         lex_left = ComponentLexeme()