Minor formatting fixes in code listings in Bazel CI blog post.
Minor formatting fixes in code listings in Bazel CI blog post.

Removes extraneous '\' characters before shell script comments.

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MOS_MIGRATED_REVID=113239711

laszlocsomor/bazel-blog,bazelbuild/bazel-blog,davidzchen/bazel-blog,laszlocsomor/bazel-blog,davidzchen/bazel-blog,davidzchen/bazel-blog,bazelbuild/bazel-blog,bazelbuild/bazel-blog,davidzchen/bazel-blog,laszlocsomor/bazel-blog,laszlocsomor/bazel-blog