Update CodeSandbox and edit links

Author: aj-foster

src/components/Landing.js

@@ -502,7 +502,7 @@ createPopper(popcorn, tooltip, {
         </p>
         <Highlight code={code} />
         <span>
-          <ExternalLinkStyled to="https://codesandbox.io/s/github/popperjs/website/tree/master/examples/placement">
+          <ExternalLinkStyled to="https://codesandbox.io/s/github/floating-ui/popper.js.org/tree/master/examples/placement">
             Edit on CodeSandbox
           </ExternalLinkStyled>
         </span>
@@ -590,7 +590,7 @@ createPopper(popcorn, tooltip, {
         </p>
         <Highlight code={code} />
         <span>
-          <ExternalLinkStyled to="https://codesandbox.io/s/github/popperjs/website/tree/master/examples/overflow-prevention">
+          <ExternalLinkStyled to="https://codesandbox.io/s/github/floating-ui/popper.js.org/tree/master/examples/overflow-prevention">
             Edit on CodeSandbox
           </ExternalLinkStyled>
         </span>
@@ -641,7 +641,7 @@ createPopper(popcorn, tooltip);
         </p>
         <Highlight code={code} />{' '}
         <span>
-          <ExternalLinkStyled to="https://codesandbox.io/s/github/popperjs/website/tree/master/examples/flipping">
+          <ExternalLinkStyled to="https://codesandbox.io/s/github/floating-ui/popper.js.org/tree/master/examples/flipping">
             Edit on CodeSandbox
           </ExternalLinkStyled>
         </span>

src/components/Layout.js

@@ -193,7 +193,7 @@ const EditPage = ({ path }) => (
               margin-top: 15px;
               display: inline-block;
             `}
-            href={`https://github.com/popperjs/website/edit/master/src/${
+            href={`https://github.com/floating-ui/popper.js.org/edit/master/src/${
               route.fileAbsolutePath.split('/src/')[1]
             }`}
             rel="noopener noreferrer"