Minor documentation fixes

modules/juce_audio_basics/utilities/juce_SmoothedValue.h

@@ -193,7 +193,7 @@ namespace ValueSmoothingTypes
 
     To smooth values spread across an exponential range, where the increments
     between the current and target value are multiplicative (like frequencies),
-    you should pass the multiplicative smoothing type as a template paramater:
+    you should pass the multiplicative smoothing type as a template parameter:
 
     @code
     SmoothedValue<float, ValueSmoothingTypes::Multiplicative> yourSmoothedValue;

modules/juce_audio_processors/processors/juce_AudioProcessorParameterGroup.h

@@ -64,7 +64,7 @@ public:
         /** Returns the parent group or nullptr if this is a top-level group. */
         AudioProcessorParameterGroup* getParent() const              { return parent; }
 
-        /** Returns a pointer to a parameter if this node contains a paramater, nullptr otherwise. */
+        /** Returns a pointer to a parameter if this node contains a parameter, nullptr otherwise. */
         AudioProcessorParameter* getParameter() const                { return parameter.get(); }
 
         /** Returns a pointer to a group if this node contains a group, nullptr otherwise. */

modules/juce_gui_basics/windows/juce_TooltipWindow.h

@@ -65,7 +65,7 @@ public:
         To change the style of tooltips, see the LookAndFeel class for its tooltip
         methods.
 
-        @param parentComponent  if set to 0, the TooltipWindow will appear on the desktop,
+        @param parentComponent  if set to nullptr, the TooltipWindow will appear on the desktop,
                                 otherwise the tooltip will be added to the given parent
                                 component.
         @param millisecondsBeforeTipAppears     the time for which the mouse has to stay still