fix typos in examples

Fix typos

Signed-off-by: HowJMay <[email protected]>

examples/temperature_conversion/readme.txt

@@ -2,5 +2,5 @@ This is a simple example of the C++ library mosquittopp.
 
 It is a client that subscribes to the topic temperature/celsius which should
 have temperature data in text form being published to it. It reads this data as
-a Celsius temperature, converts to Farenheit and republishes on
-temperature/farenheit.
+a Celsius temperature, converts to Fahrenheit and republishes on
+temperature/fahrenheit.

examples/temperature_conversion/temperature_conversion.cpp

@@ -28,17 +28,17 @@ void mqtt_tempconv::on_connect(int rc)
 
 void mqtt_tempconv::on_message(const struct mosquitto_message *message)
 {
- double temp_celsius, temp_farenheit;
+ double temp_celsius, temp_fahrenheit;
  char buf[51];
 
  if(!strcmp(message->topic, "temperature/celsius")){
  memset(buf, 0, 51*sizeof(char));
  /* Copy N-1 bytes to ensure always 0 terminated. */
  memcpy(buf, message->payload, 50*sizeof(char));
  temp_celsius = atof(buf);
- temp_farenheit = temp_celsius*9.0/5.0 + 32.0;
- snprintf(buf, 50, "%f", temp_farenheit);
- publish(NULL, "temperature/farenheit", strlen(buf), buf);
+ temp_fahrenheit = temp_celsius*9.0/5.0 + 32.0;
+ snprintf(buf, 50, "%f", temp_fahrenheit);
+ publish(NULL, "temperature/fahrenheit", strlen(buf), buf);
  }
 }