feat: Replace Inc with LLC.

Also update the snapshot.

Author: Rebecca Graber

src/components/Footer.jsx

@@ -210,7 +210,7 @@ class Footer extends React.Component {
               </li>
             </ul>
             <p>
-              © {new Date().getFullYear()} edX Inc. All rights reserved.
+              © {new Date().getFullYear()} edX LLC. All rights reserved.
               <br />
               <FormattedMessage
                 id="footer.trademarks"

src/components/__snapshots__/Footer.test.jsx.snap

@@ -430,7 +430,7 @@ exports[`<Footer /> renders correctly renders with a language selector 1`] = `
       <p>
         © 
         2022
-         edX Inc. All rights reserved.
+         edX LLC. All rights reserved.
         <br />
         <span>
           深圳市恒宇博科技有限公司 
@@ -818,7 +818,7 @@ exports[`<Footer /> renders correctly renders without a language selector 1`] =
       <p>
         © 
         2022
-         edX Inc. All rights reserved.
+         edX LLC. All rights reserved.
         <br />
         <span>
           深圳市恒宇博科技有限公司 
@@ -1164,7 +1164,7 @@ exports[`<Footer /> renders correctly renders without a language selector in es
       <p>
         © 
         2022
-         edX Inc. All rights reserved.
+         edX LLC. All rights reserved.
         <br />
         <span>
           深圳市恒宇博科技有限公司