Rollup merge of #46986 - nvzqz:basic-usage, r=steveklabnik
Rollup merge of #46986 - nvzqz:basic-usage, r=steveklabnik

Add "Basic Usage" to int min_value and max_value docs

This adds "Basic Usage:" to the docs of `min_value` and `max_value`, which makes it consistent with docs of other integer methods.

GBGamer/rust,graydon/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust,graydon/rust,GBGamer/rust,graydon/rust,aidancully/rust,aidancully/rust,GBGamer/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,GBGamer/rust,graydon/rust,GBGamer/rust