thermostat: fix INSTALL typo

soft/thermostat/INSTALL

@@ -1,7 +1,7 @@
 Dependencies:
 sudo apt install qttools5-dev-tools qt5-default qtbase5-private-dev
 git clone https://github.com/qt/qtmqtt.git
-cd qmqtt
+cd qtmqtt
 git checkout v$(qmake -v | grep "Qt version" | sed "s/^.*version \([5-9]\.[0-9]\+\.[0-9]\+\) .*$/\1/") || echo "Unable to find your Qt version"
 qmake && make -j$(nproc)
 sudo make install