Add navigation page titles

content/2.self-hosting/1.hosting-intro.md

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+---
+title: 'Start self-hosting'
+---
 # How to self host
 
 ::alert{type="info"}

content/2.self-hosting/2.proxy.md

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+---
+title: 'The proxy'
+---
 # Setting up the proxy
 
 Our proxy is used to bypass CORS-protected URLs on the client side, allowing users to make requests to protected endpoints without a backend server.

content/2.self-hosting/3.client.md

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+---
+title: 'The client'
+---
 # Setting up the client
 
 ## Method 1 - Vercel - Recommended

content/2.self-hosting/4.backend.md

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+---
+title: 'The backend'
+---
 # Setting up the backend
 
 // EXPLAIN HOW TO HOST THE BACKEND

content/2.self-hosting/5.use-backend.md

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+---
+title: 'Configure backend'
+---
 # Configure your client with the backend
 
 // EXPLAIN HOW TO SET BACKEND URL ON OFFICIAL INSTANCE

content/2.self-hosting/6.about-pwa.md

@@ -1,3 +1,6 @@
+---
+title: 'PWA vs no-PWA'
+---
 # About selfhosting PWA
 
 // EXPLAIN WHY ITS A BAD IDEA, BUT ALSO HOW TO DO IT

content/2.self-hosting/7.troubleshooting.md

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+---
+title: 'Troubleshooting'
+---
 # Troubleshooting
 
 // EXPLAIN HOW TO TROUBLESHOOT