Update docs

Author: h2zero

docs/1.x_to2.x_migration_guide.md

@@ -43,6 +43,7 @@ The changes listed here are only the required changes that must be made, and a s
     Note: If setting a custom address, it should be set with `NimBLEDevice::setOwnAddr` first before calling  `NimBLEDevice::setOwnAddrType`.
 - `NimBLEDevice::getClientListSize` replaced with `NimBLEDevice::getCreatedClientCount`.
 - `NimBLEDevice::getClientList` was removed and `NimBLEDevice::getConnectedClients` can be used instead which returns a `std::vector` of pointers to the connected client instances. This was done because internally the clients are managed in a `std::array` which replaced the 'std::list`.  
+- `NimBLEDevice::getClientByID(uint16_t conn_id);` has been changed to `NimBLEDevice::getClientByHandle(uint16_t connHandle)`
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 ## BLE Addresses
@@ -133,6 +134,7 @@ Have been removed, instead the application should use `NimBLERemoteCharacteristi
 - - `NimBLEScanCallbacks::onResult`, functions the same as the old `NimBLEAdvertisedDeviceCallbacks::onResult` but now takes aa `const NimBLEAdvertisedDevice*` instead of non-const.
 - - `NimBLEScanCallbacks::onScanEnd`, replaces the scanEnded callback passed to `NimBLEScan::start` and now takes a `const NimBLEScanResults&` and `int reason` parameter.
 - - `NimBLEScanCallbacks::onDiscovered`, This is called immediately when a device is first scanned, before any scan response data is available and takes a `const NimBLEAdvertisedDevice*` parameter.  
+- `NimBLEScan::setAdvertisedDeviceCallbacks(NimBLEAdvertisedDeviceCallbacks* callbacks, bool wantDuplicates)` has been changed to `NimBLEScan::setScanCallbacks(NimBLEScanCallbacks* callbacks, bool wantDuplicates);`
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 ### Advertised Device

docs/Migration_guide.md

@@ -234,7 +234,7 @@ This can be changed to use passkey authentication or numeric comparison. See [Se
 Advertising works the same as the original API except:
 
 Calling `NimBLEAdvertising::setAdvertisementData` will entirely replace any data set with `NimBLEAdvertising::addServiceUUID`, or
-`NimBLEAdvertising::setAppearance` or similar methods. You should set all the data you wish to advertise within the `NimBLEAdvertisementData` instead.  
+`NimBLEAdvertising::setAppearance` or similar methods. You should set all the data you wish to advertise within the `NimBLEAdvertisementData` instead if calling `NimBLEAdvertising::setAdvertisementData`.  
 <br/>
 
 > BLEAdvertising::start (NimBLEAdvertising::start)