Update react-components/react-portal README.md (#28520)

* Update react-components/react-portal README.md Updated typos in the docs. * changelog * semicolon
microsoft · Jul 13, 2023 · 8d06e6d · 8d06e6d
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diff --git a/change/@fluentui-react-portal-e75181ac-7bf9-4b6e-a79e-2f1c3f54d5e7.json b/change/@fluentui-react-portal-e75181ac-7bf9-4b6e-a79e-2f1c3f54d5e7.json
@@ -0,0 +1,7 @@
+{
+  "type": "none",
+  "comment": "Update react-components/react-portal README.md",
+  "packageName": "@fluentui/react-portal",
+  "email": "jirivyhnalek@microsoft.com",
+  "dependentChangeType": "none"
+}
diff --git a/packages/react-components/react-portal/README.md b/packages/react-components/react-portal/README.md
@@ -81,8 +81,8 @@ Below shows what a virtual parent is
 ```tsx
 // Setting a virtual parent
 
-const parent document.getElementById('parent')
-const child document.getElement.ById('child');
+const parent = document.getElementById('parent');
+const child = document.getElementById('child');
 
 child._virtual.parent = parent;
 ```