Update tax mapping information in documentation

Author: edgtz

website/i18n/en/docusaurus-plugin-content-docs-stripe-docs/current/05-configuracion-de-facturacion/03-configuracion-de-impuestos.md

@@ -13,12 +13,11 @@ When converting a **Stripe invoice** into a **Facturapi invoice**, the **default
 
 - **Taxes will be mapped according to their name in Stripe**:  
   - `"IEPS"` → **IEPS**  
-  - `"ISR"` → **ISR**  
   - `"IVA Exento"` → **Exempt VAT**  
   - **Any other name** → **VAT**  
   - **If the invoice item has no taxes, no taxes will be added to the Facturapi invoice.**  
 
 📌 **Note:**  
 - If the payment **does not have an invoice in Stripe**, the default taxes will be applied.  
 - If the payment **comes from a Stripe invoice**, the taxes defined in the invoice will be used.  
-- Tax mapping is based on the **tax name** in Stripe.
+- Tax mapping is based on the **tax name** in Stripe.