fix links to work on a bare host (#132)

src/screens/settings/About.tsx

@@ -44,10 +44,10 @@ export default function About() {
             <ListItem>
                 <ListItemText primary="Build time" secondary={buildTime()} />
             </ListItem>
-            <ListItemLink href={about.github}>
+            <ListItemLink to={about.github}>
                 <ListItemText primary="Github" secondary={about.github} />
             </ListItemLink>
-            <ListItemLink href={about.discord}>
+            <ListItemLink to={about.discord}>
                 <ListItemText primary="Discord" secondary={about.discord} />
             </ListItemLink>
         </List>

src/screens/settings/Backup.tsx

@@ -68,7 +68,7 @@ export default function Backup() {
     return (
         <>
             <List sx={{ padding: 0 }}>
-                <ListItemLink href={`${baseURL}/api/v1/backup/export/file`}>
+                <ListItemLink to={`${baseURL}/api/v1/backup/export/file`}>
                     <ListItemText
                         primary="Create Backup"
                         secondary="Backup library as a Tachiyomi backup"