chore: coded post req for create posts on db

backend/internal/storage/migrations.go

@@ -2,9 +2,9 @@ package storage
 
 const Migrations = `
 CREATE TABLE IF NOT EXISTS posts(
-	id INTEGER PRIMARY KEY AUTOINCREMENT 	
-	title TEXT NOT NULL
-	content TEXT NOT NULL
+	id INTEGER PRIMARY KEY AUTOINCREMENT,	
+	title TEXT NOT NULL,
+	content TEXT NOT NULL,
 	CREATED_AT DATETIME DEFAULT CURRENT_TIMESTAMP
 	);
 `