That is what will happen. FL has no state income tax, so nothing would have been withheld for FL. If you are a resident of MD you are subject to state tax in MD, so you can expect to owe something to the state. Enter your W-2 just as it appears. You will need to prepare a MD return.
You must pay your state tax due using the state’s preferred method of receiving payment. For most states that will be by making a payment to the state’s own tax website, or by mailing a check or money order.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/state-taxes/contact-state-department-revenue/L9qVToi02_US_en_US?uid=m6e06um0