chore(docs): update docs (#6446)

* docs(space): update demo

* docs(affix): update docs

Author: CCherry07

components/affix/index.en-US.md

@@ -1,6 +1,6 @@
 ---
 category: Components
-type: Navigation
+type: Other
 title: Affix
 cover: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*YSm4RI3iOJ8AAAAAAAAAAAAADrJ8AQ/original
 coverDark: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*03dxS64LxeQAAAAAAAAAAAAADrJ8AQ/original

components/affix/index.zh-CN.md

@@ -1,7 +1,7 @@
 ---
 category: Components
 subtitle: 固钉
-type: 导航
+type: 其他
 title: Affix
 cover: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*YSm4RI3iOJ8AAAAAAAAAAAAADrJ8AQ/original
 coverDark: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*03dxS64LxeQAAAAAAAAAAAAADrJ8AQ/original

components/space/demo/index.vue

@@ -2,6 +2,7 @@
   <demo-sort :cols="1">
     <Base />
     <Customize />
+    <Size />
     <Vertical />
     <Align />
     <Wrap />
@@ -24,6 +25,7 @@ import CompactButtonVertical from './compact-button-vertical.vue';
 import CN from '../index.zh-CN.md';
 import US from '../index.en-US.md';
 import { defineComponent } from 'vue';
+import Size from './size.vue';
 
 export default defineComponent({
   CN,
@@ -38,6 +40,7 @@ export default defineComponent({
     Compact,
     CompactButtons,
     CompactButtonVertical,
+    Size,
   },
   setup() {
     return {};