build rustdoc, don't do two compiler builds

Author: MabezDev

support/rust-build/x86_64-unknown-linux-gnu/build.sh

@@ -4,6 +4,6 @@ set -e
 
 git clone --recursive --depth 1 --shallow-submodules https://github.com/esp-rs/rust.git -b "esp-${RELEASE_VERSION}"
 cd rust
-python3 src/bootstrap/configure.py --experimental-targets=Xtensa --release-channel=nightly --release-description="${RELEASE_VERSION}" --enable-extended --enable-cargo-native-static --tools=clippy,cargo,rustfmt,rust-analyzer-proc-macro-srv,src --dist-compression-formats='xz' --enable-lld --host aarch64-unknown-linux-gnu,x86_64-unknown-linux-gnu --target aarch64-unknown-linux-gnu,x86_64-unknown-linux-gnu --build aarch64-unknown-linux-gnu --disable-docs
+python3 src/bootstrap/configure.py --experimental-targets=Xtensa --release-channel=nightly --release-description="${RELEASE_VERSION}" --enable-extended --enable-cargo-native-static --tools=clippy,cargo,rustfmt,rust-analyzer-proc-macro-srv,src,rustdoc --dist-compression-formats='xz' --enable-lld --host x86_64-unknown-linux-gnu --target x86_64-unknown-linux-gnu --build aarch64-unknown-linux-gnu
 
 python3 x.py dist --stage 2