Fix Broken Links In Documentation (#28321)

## Summary

I used [link-inspector](https://github.com/justindhillon/link-inspector)
to find a bunch of broken links in this projects documentation. Here is
what I fixed:

https://www.html5rocks.com/en/tutorials/canvas/hidpi/ -->
https://web.dev/articles/canvas-hidipi


https://w3c.github.io/webcomponents/spec/custom/#custom-elements-core-concepts
--> https://www.w3.org/TR/custom-elements/


https://github.com/facebookarchive/fixed-data-table/blob/main/src/vendor_upstream/dom/normalizeWheel.js
-->
https://github.com/facebookarchive/fixed-data-table/blob/master/src/vendor_upstream/dom/normalizeWheel.js

https://upload.wikimedia.org/wikipedia/commons/e/ee/Atom_%282%29.png -->
https://upload.wikimedia.org/wikipedia/commons/1/1b/Atom.png

## Support my work

I used [link-inspector](https://github.com/justindhillon/link-inspector)
to find and fix this issue. If you find this PR useful, give the repo a
:star:

Author: justindhillon

fixtures/dom/src/components/fixtures/suspense/index.js

@@ -213,7 +213,7 @@ class TextInputFixtures extends React.Component {
 
           <Fixture>
             <SuspendyTree>
-              <img src="https://upload.wikimedia.org/wikipedia/commons/e/ee/Atom_%282%29.png" />
+              <img src="https://upload.wikimedia.org/wikipedia/commons/1/1b/Atom.png" />
               React is cool
             </SuspendyTree>
           </Fixture>

packages/react-devtools-shared/src/devtools/cache.js

@@ -15,7 +15,7 @@ import {createContext} from 'react';
 // TODO (cache) Remove this cache; it is outdated and will not work with newer APIs like startTransition.
 
 // Cache implementation was forked from the React repo:
-// https://github.com/facebook/react/blob/main/packages/react-cache/src/ReactCache.js
+// https://github.com/facebook/react/blob/main/packages/react-cache/src/ReactCacheOld.js
 //
 // This cache is simpler than react-cache in that:
 // 1. Individual items don't need to be invalidated.

packages/react-devtools-timeline/src/view-base/Surface.js

@@ -21,7 +21,7 @@ export type ViewRefs = {
   hoveredView: View | null,
 };
 
-// hidpi canvas: https://www.html5rocks.com/en/tutorials/canvas/hidpi/
+// hidpi canvas: https://web.dev/articles/canvas-hidipi
 function configureRetinaCanvas(
   canvas: HTMLCanvasElement,
   height: number,

packages/react-devtools-timeline/src/view-base/utils/normalizeWheel.js

@@ -7,7 +7,7 @@
  * @flow
  */
 
-// Adapted from: https://github.com/facebookarchive/fixed-data-table/blob/main/src/vendor_upstream/dom/normalizeWheel.js
+// Adapted from: https://github.com/facebookarchive/fixed-data-table/blob/master/src/vendor_upstream/dom/normalizeWheel.js
 
 export type NormalizedWheelDelta = {
   deltaX: number,

packages/react-dom-bindings/src/server/ReactFizzConfigDOM.js

@@ -3710,7 +3710,7 @@ export function pushStartInstance(
       return pushSelfClosing(target, props, type);
     }
     // These are reserved SVG and MathML elements, that are never custom elements.
-    // https://w3c.github.io/webcomponents/spec/custom/#custom-elements-core-concepts
+    // https://html.spec.whatwg.org/multipage/custom-elements.html#custom-elements-core-concepts
     case 'annotation-xml':
     case 'color-profile':
     case 'font-face':

packages/react-dom-bindings/src/shared/isCustomElement.js

@@ -15,7 +15,7 @@ function isCustomElement(tagName: string, props: Object): boolean {
     // These are reserved SVG and MathML elements.
     // We don't mind this list too much because we expect it to never grow.
     // The alternative is to track the namespace in a few places which is convoluted.
-    // https://w3c.github.io/webcomponents/spec/custom/#custom-elements-core-concepts
+    // https://html.spec.whatwg.org/multipage/custom-elements.html#custom-elements-core-concepts
     case 'annotation-xml':
     case 'color-profile':
     case 'font-face':