Bug - fix code example of customized title on typography page

[mcoker]

The code below looks like a bug? Both blocks are the same code

patternfly-org/packages/documentation-site/patternfly-docs/content/design-guidelines/styles/typography/typography.md

Lines 64 to 68 in 9024016

	<Title headingLevel="h2"> This is a default "xl" H2. </Title>
	```<Title headingLevel="h2" size='lg'> Aa </Title>```
	<Title headingLevel="h2" size='lg'> This is a customized "lg" H2. </Title>
	```<Title headingLevel="h2" size='lg'> Aa </Title>```

I'm assuming the first block should just omit the size prop and use the default, like <Title headingLevel="h2"> Aa </Title>