Changelog for W3C Accessibility Standards Overview

Translators:

Change last_updated to the date of the translation update.
The other dates after footer > should match the English version.
From the GitHub pull request, after a couple of minutes, you can get a preview of your rendered page by selecting the “Details” link after “netlify/wai-std-gl-overview/deploy-preview — Deploy preview ready!”. Then select your language at the top.

April 2021

In the frontmatter at the top, add changelog: /videos/standards-and-benefits/changelog/ between ref and layout:
ref: /videos/standards-and-benefits/ # Do not change this
changelog: /standards-guidelines/changelog/
layout: default
In the frontmatter, under footer: >:
- Update the date.
- Add CHANGELOG. after the date. Leave it in all capital letters and do not translate it.
  <p><strong>Date:</strong> Updated 30 April 2021. CHANGELOG.</p>

Add “2” with WCAG:
- Change “### Web Content Accessibility Guidelines (WCAG) {#wcag}” to:
  ### Web Content Accessibility Guidelines (WCAG) 2 {#wcag2}
- Add “2” — Change “WCAG info:” to:
  WCAG 2 info:
Around - [WCAG 2.0 Standard](https://www.w3.org/TR/WCAG20/)add one line of links before and two lines after:
- [[WCAG 2 Translations]](/standards-guidelines/wcag/translations/)
- [WCAG 2.0 Standard](https://www.w3.org/TR/WCAG20/)
- [WCAG 2.1 Standard](https://www.w3.org/TR/WCAG21/), [What’s New in WCAG 2.1](/standards-guidelines/wcag/new-in-21/)
- [[What's New in WCAG 2.2 Working Draft]](/standards-guidelines/wcag/new-in-22/)
Before “## Technical Specifications”, add:
### W3C Accessibility Guidelines (WCAG) 3 Working Draft {#wcag3}
WCAG 3 is an early draft that is intended to become a W3C Standard. WCAG 3 applies to web content, apps, tools, publishing, and emerging technologies on the web.

WCAG 3 info:
* [[WCAG 3 Introduction]](/standards-guidelines/wcag/wcag3-intro/)

Significant: Added links to Pronunciation Overview.

Before “## Other Areas of W3C WAI work”, add:
### Pronunciation
[[Pronunciation Overview]](/pronunciation/) — Pronunciation is about screen readers and other text-to-speech (TTS) synthesis pronouncing content properly.

Under “## Additional Information {#moreinfo}”, in first item, change URI link to https://www.w3.org/TR/?tag=accessibility:
- [List of all W3C accessibility-related Standards ("W3C Recommendations") and Working Group Notes](https://www.w3.org/TR/?tag=accessibility)