Documentation not found #readme-don-t-trust-all-proxies

[azmmmm]

hi, i'm new to golang and this framework.

I'm trying to run a starting template following document.
However, I encounter some warning :

[GIN-debug] [WARNING] You trusted all proxies, this is NOT safe. We recommend you to set a value.
Please check https://pkg.go.dev/github.com/gin-gonic/gin#readme-don-t-trust-all-proxies for details.

I want to know more detail. So I follow into the document, but #readme-don-t-trust-all-proxies is nowhere to be found.
I know func (*Engine) SetTrustedProxies could possibly solve the warning. But I still wanna know why I should do it as "don-t-trust-all-proxies"?

ps: I tried google "don't trust all proxies" but nothing specific. And I'm a newbee and this is my first time making issue. Please feel free to correct me about anything.