feat(subscribe): Add Itacoatiara city to event date title on subscribe.tsx (#49)

# Descrição



- Add Itacoatiara city to event date on subscribe.tsx


The way the entire description on the main page is made only makes sense
to those who already know Amazonas, its cities, and its particularities.
As Python Norte is an event in the northern region and many people may
come from other states outside of Amazonas, it is good to provide short,
direct (and sometimes duplicate) information.

Following the Zen maxim of Python, "Explicit is better than implicit",
even if the location is a little lower in the page's text, I think it is
better to make it explicit in the first text.

### Before:


![image](https://github.com/user-attachments/assets/49818822-0376-490f-97f6-648de4e43dca)


### After:

![image](https://github.com/user-attachments/assets/75027ae1-0858-4805-a0f7-c358eaea11e3)


Minha mudança é uma:

- [x] Correção de bug (alteração que corrige um problema)
- [ ] Novo recurso (alteração que adiciona funcionalidades)
- [ ] Esta alteração requer uma atualização de documentação

Author: meu-bem

src/app/(home)/subscribe.tsx

@@ -25,7 +25,7 @@ export async function Subscribe() {
 
         <div className="space-y-8 text-center lg:text-left">
           <h1 className="text-3xl md:text-5xl">
-            {startDay} a {endDay} de {month}
+            {startDay} a {endDay} de {month} em Itacoatiara/AM
           </h1>
 
           <p className="leading-relaxed">