把主题切换示例挪到界面分组下

pages/tabBar/API.uvue

@@ -206,7 +206,14 @@
                 name: 'showToast轻提示框',
                 url: 'toast',
                 api: ["showToast"]
-              }
+              }
+              // #ifdef APP
+              ,{
+                name: '主题切换',
+                url: 'theme-change',
+                api: ["setAppTheme","onOsThemeChange","offOsThemeChange","onAppThemeChange","offAppThemeChange"]
+              }
+              // #endif
             ] as Page[],
           },
           {
@@ -501,16 +508,6 @@
               }
             ] as Page[],
           },
-          {
-            id: 'theme-change',
-            name: '主题切换',
-            pages: [
-              {
-                name: '主题切换',
-                url: 'theme-change',
-              }
-            ] as Page[]
-          },
           // #endif
           {
             id: "payment",