refactor(cli/rustup-mode): move DocPage::name() to a separate impl block

Author: rami3l

src/cli/rustup_mode.rs

@@ -1425,10 +1425,6 @@ macro_rules! docs_data {
         }
 
         impl DocPage {
-            fn name(&self) -> Option<&'static str> {
-                Some(self.path()?.rsplit_once('/')?.0)
-            }
-
             fn path(&self) -> Option<&'static str> {
                 $( if self.$ident { return Some($path); } )+
                 None
@@ -1466,6 +1462,12 @@ docs_data![
     (unstable_book, "The Unstable Book", "unstable-book/index.html"),
 ];
 
+impl DocPage {
+    fn name(&self) -> Option<&'static str> {
+        Some(self.path()?.rsplit_once('/')?.0)
+    }
+}
+
 async fn doc(
     cfg: &Cfg<'_>,
     path_only: bool,