search_model assumes lowercase

[OkFranco]

Hello, recently I was using top2vec and when using model.search_model(keywords, num_topics) if words in keywords only existed in the corpora in title format (ex.: Jeronimo) the model.search_model returns ValueError: 'jeronimo' has not been learned by the model so it cannot be searched. Even if >>> 'Jeronimo' in model. vocab >>> True. Not sure if this was on purpose or is a limitation. Thanks for the great work Joao