quick text fixing

Author: isbkch

README.md

@@ -48,7 +48,7 @@ DHT11 - Schematic Diagram
 
 Wire the [DHT11](https://amzn.to/2Qs9fcV) sensor to the [Arduino Uno](https://amzn.to/2RnHhPY) development board as shown in the following schematic diagram.
 
-<img align="center" src="https://github.com/MecaHumArduino/arduino-uno-aws-weather-station/blob/master/docs/dht11-wiring.png?raw=true" style="max-width:100%;" height="600">
+<img align="center" src="https://github.com/MecaHumArduino/arduino-uno-aws-weather-station/blob/master/docs/dht11-wiring.png?raw=true" style="max-width:100%;" height="350">
 
 LCD Screen - Schematic Diagram
 ------------------------------