java: corrected typo and documentation

Signed-off-by: Stefan Andritoiu <stefan.andritoiu@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/c++/otp538u.cxx

@@ -49,7 +49,7 @@ int main()
 
   // Instantiate a OTP538U on analog pins A0 and A1
   // A0 is used for the Ambient Temperature and A1 is used for the
-  // Object tempewrature.
+  // Object temperature.
   upm::OTP538U *temps = new upm::OTP538U(0, 1, OTP538U_AREF);
   
   // Output ambient and object temperatures

src/gas/gas.h

@@ -87,8 +87,6 @@ class Gas {
 
         /**
          * Returns one sample from the sensor
-         *
-         * @param ctx Threshold context
          */
         virtual int getSample ();