Add browser example to docs

docs/docs/examples/03-browser/_category_.json

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+{
+    "label": "🌐 Browser",
+    "position": 3
+}

docs/docs/examples/03-browser/index.md

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+# Browser Usage
+
+Version 3.1.0 introduced official browser support.
+
+Visit [Browser Support](../../browser-support/) for more information.
+
+## Basic Usage
+
+```tsx
+import { CheckResult } from '@version-checker/api'
+import versionCheck from '@version-checker/browser'
+import { useState } from 'react'
+import { useQuery } from 'react-query'
+
+export default function App() {
+    const { data } = useQuery<CheckResult['update'], any, CheckResult['update'], any>({
+        queryKey: ['updater'],
+        queryFn: async () => {
+            const { update } = await versionCheck({
+                owner: 'axelrindle',
+                repo: 'github-version-checker',
+                currentVersion: '1.2.3',
+            })
+
+            return update
+        }
+    })
+
+    return (
+        <p>
+            {data === undefined ?
+                (
+                    <p>
+                        No update found.
+                    </p>
+                ) :
+                (
+                    <p>
+                        <b>{data?.name}</b>
+                    </p>
+                )
+            }
+        </p>
+    )
+}
+```