Fix some dosctrings errors and trailing whitespaces

Signed-off-by: Kirill Luchikhin <kirill.luchikhin@intel.com>

src/servo/servo.h

@@ -79,43 +79,43 @@ class Servo {
         {
             return m_name;
         }
-        
+
         /**
          * Set min pulse width
          *
          * @param width HIGH signal width
          */
         void setMinPulseWidth (int width);
-        
+
         /**
          * Set max pulse width
          *
          * @param width HIGH signal width
          */
         void setMaxPulseWidth (int width);
-        
+
         /**
          * Set max period width
          *
          * @param width PWM period width
          */
         void setMaxPeriod (int width);
-        
+
         /**
          * Return min pulse width
          */
         int getMinPulseWidth ();
-        
+
         /**
          * Return max pulse width
          */
         int getMaxPulseWidth ();
-        
+
         /**
          * Return max PWM period width
          */
         int getMaxPeriod ();
-        
+
     protected:
         int calcPulseTraveling (int value);
 
@@ -124,7 +124,7 @@ class Servo {
         float               m_maxAngle;
         mraa_pwm_context     m_pwmServoContext;
         int                 m_currAngle;
-        
+
         int                 m_minPulseWidth;
         int                 m_maxPulseWidth;
         int                 m_maxPeriod;