Fix NavContext usage in Talks component

Author: nannany

src/components/Layout/HomeContent.js

@@ -1171,7 +1171,7 @@ async function Talks({ confId }) {
         </CodeBlock>
       }
       right={
-        <NavContext.Provider value={{slug, navigate}}>
+        <NavContext value={{slug, navigate}}>
           <BrowserChrome
             domain="example.com"
             path={'confs/' + slug}
@@ -1191,7 +1191,7 @@ async function Talks({ confId }) {
               </Suspense>
             </ExamplePanel>
           </BrowserChrome>
-        </NavContext.Provider>
+        </NavContext>
       }
     />
   );