Merge pull request #676 from eps1lon/docs/fix-404

docs: Fix 404 links to WAI-ARIA spec

Author: ljharb

docs/rules/aria-activedescendant-has-tabindex.md

@@ -1,6 +1,6 @@
 # aria-activedescendant-has-tabindex
 
-`aria-activedescendant` is used to manage focus within a [composite widget](https://www.w3.org/TR/wai-aria/roles#composite_header).
+`aria-activedescendant` is used to manage focus within a [composite widget](https://www.w3.org/TR/wai-aria/#composite).
 The element with the attribute `aria-activedescendant` retains the active document
 focus; it indicates which of its child elements has secondary focus by assigning
 the ID of that element to the value of `aria-activedescendant`. This pattern is

docs/rules/aria-proptypes.md

@@ -3,7 +3,7 @@
 ARIA state and property values must be valid.
 
 #### References
-1. [Spec](https://www.w3.org/TR/wai-aria/states_and_properties)
+1. [Spec](https://www.w3.org/TR/wai-aria/#states_and_properties)
 2. [AX_ARIA_04](https://github.com/GoogleChrome/accessibility-developer-tools/wiki/Audit-Rules#ax_aria_04)
 
 ## Rule details

docs/rules/role-has-required-aria-props.md

@@ -3,7 +3,7 @@
 Elements with ARIA roles must have all required attributes for that role.
 
 #### References
-1. [Spec](https://www.w3.org/TR/wai-aria/roles)
+1. [Spec](https://www.w3.org/TR/wai-aria/#roles)
 2. [AX_ARIA_03](https://github.com/GoogleChrome/accessibility-developer-tools/wiki/Audit-Rules#ax_aria_03)
 
 ## Rule details

docs/rules/role-supports-aria-props.md

@@ -4,7 +4,7 @@ Enforce that elements with explicit or implicit roles defined contain only `aria
 
 #### References
 1. [AX_ARIA_10](https://github.com/GoogleChrome/accessibility-developer-tools/wiki/Audit-Rules#ax_aria_10)
-2. [Supported States & Properties](https://www.w3.org/TR/wai-aria/roles#supportedState)
+2. [Supported States & Properties](https://www.w3.org/TR/wai-aria/#states_and_properties)
 
 ## Rule details