fix: readme paragraph

Author: himorishige

README.md

@@ -279,20 +279,7 @@ client.update<Content>({
 })
 ```
 
-## Tips
-
-### Separate API keys for read and write
-
-```javascript
-const readClient = createClient({
-  serviceDomain: 'serviceDomain',
-  apiKey: 'readApiKey',
-})
-const writeClient = createClient({
-  serviceDomain: 'serviceDomain',
-  apiKey: 'writeApiKey',
-})
-```
+## CustomRequestInit
 
 ### Next.js App Router
 
@@ -330,6 +317,21 @@ setTimeout(() => {
 }, 1000)
 ```
 
+## Tips
+
+### Separate API keys for read and write
+
+```javascript
+const readClient = createClient({
+  serviceDomain: 'serviceDomain',
+  apiKey: 'readApiKey',
+})
+const writeClient = createClient({
+  serviceDomain: 'serviceDomain',
+  apiKey: 'writeApiKey',
+})
+```
+
 
 # LICENSE