Bazelisk: Defer to external documentation for installation

Since: [1] in detail installation instructions are provided, so that we
can remove npm install -g @bazel/bazelisk from our documentation.

[1] https://github.com/bazelbuild/bazel/commit/e25cc8a4c507a6d66e2631311f62eee119c55cf7

Change-Id: I77067d13862d023f8f773df37d5910161db9daa4

Documentation/dev-bazel.txt

diff --git a/Documentation/dev-bazel.txt b/Documentation/dev-bazel.txt
index edf8f0f..6354020 100644
--- a/Documentation/dev-bazel.txt
+++ b/Documentation/dev-bazel.txt
@@ -35,11 +35,8 @@
 link:https://github.com/bazelbuild/bazelisk[Bazelisk,role=external,window=_blank] is a version
 manager for link:https://bazel.build/[Bazel,role=external,window=_blank], similar to how `nvm`
 manages `npm` versions. It takes care of downloading and installing Bazel itself, so you don't have
-to worry about using the correct version of Bazel.
-
-One easy way to install Bazelisk is to run `npm install -g bazelisk`. That will also create the
-required `bazel` symlink to itself. This is so that every `bazel` command seamlessly uses Bazelisk,
-which then (installs and) runs the proper `bazel` binary version.
+to worry about using the correct version of Bazel. Bazelisk can be installed in different
+ways: link:https://docs.bazel.build/install-bazelisk.html[Install,role=external,window=_blank]
 
 [[java]]
 === Java