fix links

src/App.jsx

@@ -5,7 +5,7 @@ export default function App() {
     return (
         <Router>
             <Routes>
-                <Route exact path="/udlbook/" element={<Index />} />
+                <Route exact path="/udlbook" element={<Index />} />
             </Routes>
         </Router>
     );

src/components/Footer/index.jsx

@@ -43,7 +43,7 @@ export default function Footer() {
                 <FooterWrap>
                     <SocialMedia>
                         <SocialMediaWrap>
-                            <SocialLogo to="/udlbook/" onClick={toggleHome}>
+                            <SocialLogo to="/udlbook" onClick={toggleHome}>
                                 Understanding Deep Learning
                             </SocialLogo>
                             <WebsiteRights>