Rollup merge of #144149 - reallesee:master, r=Noratrieb

docs: update link to RISC-V and Xtensa installation guide

Replace outdated link https://docs.esp-rs.org/book/installation/riscv-and-xtensa.html with the official Espressif documentation at https://docs.espressif.com/projects/rust/book/installation/index.html
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许杰友 Jieyou Xu (Joe) 2025-07-19 23:44:13 +08:00 committed by GitHub
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@ -24,4 +24,4 @@ Xtensa targets that support `std` are documented in the [ESP-IDF platform suppor
## Building the targets
The targets can be built by installing the [Xtensa enabled Rust channel](https://github.com/esp-rs/rust/). See instructions in the [RISC-V and Xtensa Targets section of The Rust on ESP Book](https://docs.esp-rs.org/book/installation/riscv-and-xtensa.html).
The targets can be built by installing the [Xtensa enabled Rust channel](https://github.com/esp-rs/rust/). See instructions in the [RISC-V and Xtensa Targets section of The Rust on ESP Book](https://docs.espressif.com/projects/rust/book/installation/index.html).