Fix links to A11Y Project posts

Closes #20165

[skip sauce]

2 files changed, 2 insertions, 2 deletions

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 0b7e12ba6..01fc496a2 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -233,7 +233,7 @@ includes code changes) and under the terms of the
 [Adhere to the Code Guide.](http://codeguide.co/#css)
 
 - When feasible, default color palettes should comply with [WCAG color contrast guidelines](http://www.w3.org/TR/WCAG20/#visual-audio-contrast).
-- Except in rare cases, don't remove default `:focus` styles (via e.g. `outline: none;`) without providing alternative styles. See [this A11Y Project post](http://a11yproject.com/posts/never-remove-css-outlines/) for more details.
+- Except in rare cases, don't remove default `:focus` styles (via e.g. `outline: none;`) without providing alternative styles. See [this A11Y Project post](http://a11yproject.com/posts/never-remove-css-outlines) for more details.
 
 ### JS
 
diff --git a/docs/getting-started/accessibility.md b/docs/getting-started/accessibility.md
index 147d9305e..9faaaffb1 100644
--- a/docs/getting-started/accessibility.md
+++ b/docs/getting-started/accessibility.md
@@ -22,7 +22,7 @@ In addition, groups and toolbars should be given an explicit label, as most assi
 
 ## Skip navigation
 
-If your navigation contains many links and comes before the main content in the DOM, add a `Skip to main content` link before the navigation (for a simple explanation, see this [A11Y Project article on skip navigation links](http://a11yproject.com/posts/skip-nav-links/)). Using the `.sr-only` class will visually hide the skip link, and the <code>.sr-only-focusable</code> class will ensure that the link becomes visible once focused (for sighted keyboard users).
+If your navigation contains many links and comes before the main content in the DOM, add a `Skip to main content` link before the navigation (for a simple explanation, see this [A11Y Project article on skip navigation links](http://a11yproject.com/posts/skip-nav-links)). Using the `.sr-only` class will visually hide the skip link, and the <code>.sr-only-focusable</code> class will ensure that the link becomes visible once focused (for sighted keyboard users).
 
 {% callout danger %}
 Due to long-standing shortcomings/bugs in Chrome (see [issue 454172 in the Chromium bug tracker](https://code.google.com/p/chromium/issues/detail?id=454172 "Chromium bug tracker - Issue 454172: Focus Link Target (sequential focus navigation starting point)")) and Internet Explorer (see this article on [in-page links and focus order](http://accessibleculture.org/articles/2010/05/in-page-links/)), you will need to make sure that the target of your skip link is at least programmatically focusable by adding `tabindex="-1"`.