docs: add docs for option-group and switch

Change-Id: I9d2b7e37af40febdbf02104ab7a8756de753e134

one/build/diff-ignore.js

@@ -28,7 +28,8 @@ export default {
     props: ['model']
   },
   switch: {
-    props: ['model']
+    props: ['model', 'offLabel', 'onLabel'],
+    slots: ['content']
   },
   drawer: {
     props: ['inline']
@@ -36,6 +37,9 @@ export default {
   select: {
     props: ['max'] // 脚本没识别出来，先忽略
   },
+  'option-group': {
+    props: ['optionTag']
+  },
   link: {
     props: ['replace']
   },