Fix spelling in Lv2 classes

include/LinkedModelGroupViews.h

@@ -98,7 +98,7 @@ protected:
 	void modelChanged(class LinkedModelGroups* ctrlBase);
 
 private:
-	//! The base class must return the adressed group view,
+	//! The base class must return the addressed group view,
 	//! which has the same value as "this"
 	virtual LinkedModelGroupView* getGroupView() = 0;
 };

include/LinkedModelGroups.h

@@ -42,7 +42,7 @@
 /**
 	Base class for a group of linked models
 
-	See the LinkedModelGroup class for explenations
+	See the LinkedModelGroup class for explanations
 
 	Features:
 	* Models are stored by their QObject::objectName

include/Lv2ControlBase.h

@@ -52,7 +52,7 @@ class PluginIssue;
 
 	This class would usually be a Model subclass. However, Qt doesn't allow
 	this:
-	* inhertiting only from Model will cause diamond inheritance for QObject,
+	* inheriting only from Model will cause diamond inheritance for QObject,
 	  which will cause errors with Q_OBJECT
 	* making this a direct subclass of Instrument resp. EffectControls would
 	  require CRTP, which would make this class a template class, which would