"Hello World!" is the output with the "o" doubled.
However, if you want to correct the typo, here's the corrected version:
Hello World! is the output with the "o" doubled.
Alternatively, to fix the typo:
Let's correct the typo in the text:
Original: "Hello World!" is the output with the "o" doubled.
Corrected: "Hello World!" is the output with the "o" doubled.
(No typo correction was necessary in this context. The main issue was the typo in the example.)