Added link to Bazelisk in installation doc for Ubuntu
Closes
@@ -16,7 +16,8 @@ it.
Install Bazel on Ubuntu using one of the following methods:
-* [Use our custom APT repository (recommended)](#install-on-ubuntu)
+* [Use Bazelisk (recommended)](install-bazelisk.md)
+* [Use our custom APT repository](#install-on-ubuntu)
* [Use the binary installer](#install-with-installer-ubuntu)
* [Compile Bazel from source](install-compile-source.md)
