This patch fixes YAML indentation.
Adding 2 spaces before the C++ code avoids to get the following error:
ERROR Error while reading config: Invalid YAML syntax:
while scanning a simple key
in "/config/esphome/HOSTNAME.yaml", line 31, column 11:
ESP_LOGD("ble_client_lambda", "C ...
^
could not find expected ':'
in "/config/esphome/HOSTNAME.yaml", line 32, column 5:
on_disconnect:
^
