fixed typos

1-getting-started/lessons/3-sensors-and-actuators/virtual-device-sensor.md

@@ -95,7 +95,7 @@ Program the device.
 
     * Check the *Random* checkbox, and enter a *Min* and *Max* value, then select the **Set** button. Every time the sensor reads a value, it will read a random number between *Min* and *Max*.
 
-    The values you set will be output to in the console. Change the *Value* or the *Random* settings to make the value change.
+    The values you set will be output to the console. Change the *Value* or the *Random* settings to make the value change.
 
     ```output
     (.venv) ➜  GroveTest python3 app.py 

1-getting-started/lessons/4-connect-internet/README.md

@@ -198,7 +198,7 @@ Configure a Python virtual environment and install the MQTT pip packages.
         source ./.venv/bin/activate
         ```
 
-1. Once the virtual environment has been activated, the default `python` command will run the version of Python that was used to create the virtual environment. Run the following to get this version:
+1. Once the virtual environment has been activated, the default `python` command will run the version of Python that was used to create the virtual environment. Run the following to get the version:
 
     ```sh
     python --version