Correct powersyncdatabase code example for kotlin (#152)

* Correct powersyncdatabase code example for kotlin

* Update client-sdk-references/kotlin-multiplatform.mdx

* Update client-sdk-references/kotlin-multiplatform.mdx

* Update migration-guides/mongodb-atlas.mdx

Author: benitav

client-sdk-references/kotlin-multiplatform.mdx

@@ -125,8 +125,13 @@ b. Build a `PowerSyncDatabase` instance using the `PowerSyncBuilder` and the `Da
 ```kotlin
 // commonMain
 
-// Uses the backend connector that will be created in the next step
-database.connect(MyConnector())
+val database = PowerSyncDatabase({
+  factory: driverFactory, // The factory you defined above
+  schema: AppSchema, // The schema you defined in the previous step
+  dbFilename: "powersync.db"
+  // logger: YourLogger // Optionally include your own Logger that must conform to Kermit Logger
+  // dbDirectory: "path/to/directory" // Optional. Directory path where the database file is located. This parameter is ignored for iOS.
+});
 ```
 
 c. Connect the `PowerSyncDatabase` to the backend connector:

migration-guides/mongodb-atlas.mdx

@@ -344,8 +344,14 @@ Now that we have our Sync Rules and client-side schema defined, we can instantia
    // 2: Build a PowerSyncDatabase instance using the PowerSyncBuilder and the DatabaseDriverFactory. The schema you created in a previous step is provided as a parameter:
 
    // commonMain
-   // Uses the backend connector that will be created in the next step
-   database.connect(MyConnector())
+
+   val database = PowerSyncDatabase({
+      factory: driverFactory, // The factory you defined above
+      schema: AppSchema, // The schema you defined in the previous step
+      dbFilename: "powersync.db"
+      // logger: Logger? = YourLogger // Optionally include your own Logger that must conform to Kermit Logger
+      // dbDirectory: "path/to/directory" // Optional. Directory path where the database file is located. This parameter is ignored for iOS.
+   });
 
 
    // 3: Connect the PowerSyncDatabase to the backend connector: