Documentation change only: remove note about short_range not implemented.
Remove the note about MQTT not being implemented for short_range, 'cos it is.
# Introduction
This directory contains the API for the MQTT client implementation inside u-blox modules.
-IMPORTANT: this common API is currently only mapped to u-blox cellular modules where it is supported on SARA-R5 and the SARA-R4x series; it may be subject to small changes when it is mapped to u-blox Wi-Fi/BLE modules. This text will be updated when more is known about those changes and the associated timescales.
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# Usage
The [api](api) directory defines the MQTT client API. The [test](test) directory contains tests for that API that can be run on any platform.
