Bad use of placeholder on portuguese translation

Description of the issue:
Placeholder not being changed on some texts.
Steps to Reproduce (add as many as necessary): 1. 2. 3.

Access: brave://rewards/ and scroll down to “Anúncios” (Ads in portuguese)

Actual Result (gifs and screenshots are welcome!):
image
Reproduces how often:
Always.

Operating System and Brave Version(See the About Brave page in the main menu):

Versão 1.24.86 Chromium: 90.0.4430.212 (Versão oficial) 64 bits

I just tried with PORTUGUESE (PT-BR) translation.