Update list of states subject to tax on /pricing (#14763)

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## DESCRIBE YOUR PR
Updating this section based on a request from Lori M. in accounting.
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https://sentry-docs-git-update-tax-states.sentry.dev/pricing/#us-taxes

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Co-authored-by: Alex Krawiec <[email protected]>

Author: coolguyzone

docs/pricing/index.mdx

@@ -243,7 +243,7 @@ Currently, prices displayed on our [pricing page](http://sentry.io/pricing) don'
 
 ### US Taxes
 
-As of December 1, 2020, customers with a US-based billing address may be subject to state and local sales tax. Sales tax will apply to billing addresses located in the following states/localities:
+Customers with a US-based billing address may be subject to state and local sales tax. Sales tax will apply to billing addresses located in the following states/localities:
 
 - Arizona
 - California
@@ -254,6 +254,7 @@ As of December 1, 2020, customers with a US-based billing address may be subject
 - Hawaii
 - Illinois
 - Iowa
+- Louisiana
 - Maryland
 - Massachusetts
 - Michigan