Sorry no, when you checked someone else can claim you, that means you are a dependent.  Dependents do not qualify for the stimulus money.  You should amend your return.  Amended returns must be mailed.

How to amend (change or correct) a return you already filed

https://ttlc.intuit.com/community/amending/help/how-to-amend-change-or-correct-a-return-you-already-...