fix(docs/guide/component): wrong $componentController usage

[ptgamr]

#14091

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Thanks for your pull request. It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

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[ptgamr]

I signed it!

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CLAs look good, thanks!

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CLAs look good, thanks!

[gkalpak]

It is better to keep the original name of the service.
Name the variable $componentController and inject it as _$componentController_.

[gkalpak]

@ptgamr, thx ! Could you, please, address my comment and ping me ?

[gkalpak]

@ptgamr, I see you tried to use the correct commit message format 👍
If you want to go the extra mile, you can change it to something like:

docs(guide/component): fix `$componentController` usage

Fixes #14091

_{(Adding Fixes/Closes #XYZ at the end, closes the related issues automatically when merging the PR.)}

[ptgamr]

@gkalpak I've updated the PR. Thanks for your comment!

[gkalpak]

Backported to v1.5.x as 2dda75b.
Thx @ptgamr !

[ptgamr]

Thanks @gkalpak 👍