Duplicated word in a file description for page_components.tpl.php

[alanmels]

Description of the bug

The line 11 has:

To override individual individual components, create one of the following

Expected behavior

Probably it should be:

To override the individual components, create one of the following

[avpaderno]

The PR also removes Variables: after Variables available:. 👍🏻

I would not usually use an article with plural nouns, but there is nothing wrong in using it (as long as it is not the indefinite article 😉).