Run bazel documentation tests on mac/linux.
Run bazel documentation tests on mac/linux.

Also, fix said documentation.

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MOS_MIGRATED_REVID=108247791

bazelbuild/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,bazelbuild/bazel-website,bazelbuild/bazel-website,davidzchen/bazel-website