Fix typos found in Documentation/ and include/

Documentation/sources/Reference/ofxParameter.rst

@@ -1078,7 +1078,7 @@ and show how to evaluate the curve
             // add a control point at 0, value is 1
             gParametricParamHost->parametricParamAddControlPoint(descriptor,
                                                                   component, // curve to set 
-                                                                  0.0,   // time, ignored in this case, as we are not adding a ket
+                                                                  0.0,   // time, ignored in this case, as we are not adding a key
                                                                   0.0,   // parametric position, zero
                                                                   1.0,   // value to be, 1
                                                                   false);   // don't add a key

include/ofxImageEffect.h

@@ -160,7 +160,7 @@ These are the list of actions passed to an image effect plugin's main function.
 
  The default RoI is simply the value passed in on the
  \ref kOfxImageEffectPropRegionOfInterest
- ``inArgs`` property set. The host must initalize all the RoIs in the ``outArgs`` property set
+ ``inArgs`` property set. The host must initialize all the RoIs in the ``outArgs`` property set
  to this value before the action is called.
 
  @param  handle handle to the instance, cast to an \ref OfxImageEffectHandle