Fix code example in PluginBlockSettingsMenuItem docs

[adekbadek]

Small tweak

[mkaz]

Hi, thank you for this change. It looks good, but one small issue is the PR is opened against the wp/5.4 branch and should be opened against the master branch.

You should be able to edit this PR and switch the branch it is against to master - see this documentation to illustrate changing the base branch.

[mkaz]

👍 Looks good, thanks! See my above comment for switching the PR branch and we can merge.

[gziolo]

I tried to switch branches but it isn't straightforward.

[mkaz]

Thanks @gziolo for trying, I think @adekbadek will have to do it since its from his fork.

I created this Trac ticket to hopefully prevent future ones: https://meta.trac.wordpress.org/ticket/5151

[adekbadek]

@mkaz done 👍

[mkaz]

@adekbadek It looks like the change did not trigger a new build. I think you will need to push a new commit to the branch to trigger the build.

[aduth]

I pushed an empty commit in 88d3e3f.

It appears to have worked to kick off the build: https://travis-ci.com/github/WordPress/gutenberg/builds/160567533