Fix Prefer short array syntax

[renatonascalves]

Description

We are setting this here but it looks like it is not enough in version 2.0.

alley-coding-standards/Alley-Interactive/ruleset.xml

Lines 38 to 39 in 0c57c43

	<!-- We prefer short array syntax. -->
	<rule ref="Generic.Arrays.DisallowLongArraySyntax" />

This rule alone doesn't work. Or

<rule ref="Universal.Arrays.DisallowShortArraySyntax" />

or together
<rule ref="Generic.Arrays.DisallowLongArraySyntax" />

I was able to fix like that:

<rule ref="WordPress">
    <exclude name="Generic.Arrays.DisallowShortArraySyntax"/>
    <exclude name="Universal.Arrays.DisallowShortArraySyntax"/>
</rule>

Related: WordPress/WordPress-Coding-Standards#1968

Goal: Confirm what changed in WordPress and fix it here.

Use Case

Project using https://github.com/alleyinteractive/alley-coding-standards/releases/tag/v2.0.0

[GaryJones]

WordPress/WordPress-Coding-Standards#1920 is the key change for WordPressCS 3.0.