Update README.md

Author: axden-development

README.md

@@ -130,7 +130,7 @@ Check whether COMPANY_ID and DEVICE_ID are applied correctly through the termina
 Sensor information can be found on the Web or Mobile as shown in the image below
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 <br>
-<img src="./asset/GPS_Log.png">
+<img src="./assets/GPS_Log.png">
 
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