Fix bazelisk install command (#18016)

In aarch64 machines, the bazelisk installation command fails due to binary format mismatch. We need to take care of the architecture running on.

Signed-off-by: Kotaro Inoue <k.musaino@gmail.com>

bazel/README.md

@@ -7,7 +7,7 @@ It is recommended to use [Bazelisk](https://github.com/bazelbuild/bazelisk) inst
 On Linux, run the following commands:
 
 ```console
-sudo wget -O /usr/local/bin/bazel https://github.com/bazelbuild/bazelisk/releases/latest/download/bazelisk-linux-amd64
+sudo wget -O /usr/local/bin/bazel https://github.com/bazelbuild/bazelisk/releases/latest/download/bazelisk-linux-$([ $(uname -m) = "aarch64" ] && echo "arm64" || echo "amd64")
 sudo chmod +x /usr/local/bin/bazel
 ```