Fix spelling errors in declarativeimports documentation, which is not

currently translated (no i18n problem).

declarativeimports/plasmacomponents/qml/Button.qml

@@ -32,12 +32,12 @@ Description:
         A simple button, with optional label and icon which uses the plasma theme.
 	This button component can also be used as a checkable button by using the checkable
 	and checked properties for that.
-        Plasma theme is the theme which changes via the systemsetting-workspace appearence
+        Plasma theme is the theme which changes via the systemsetting-workspace appearance
         -desktop theme.
 
 Properties:
       * bool checked:
-        This property holds wheter this button is checked or not.
+        This property holds whether this button is checked or not.
 	The button must be in the checkable state for enable users check or uncheck it.
 	The default value is false.
 	See also checkable property.

declarativeimports/plasmacomponents/qml/Slider.qml

@@ -34,7 +34,7 @@ Properties:
     range value.
 
         real minimumValue:
-    	This property holds the minimun value that the slider's value can assume.
+        This property holds the minimum value that the slider's value can assume.
 	The default value is 0.
 
         real maximumValue:
@@ -42,7 +42,7 @@ Properties:
 	The default value is 1.
 
         real value:
-        This property holds the value selected inside the minimun to maximum range of value.
+        This property holds the value selected inside the minimum to maximum range of value.
 	The default value is 0.
 
         enumeration orientation:
@@ -290,4 +290,4 @@ Item {
         property: "x"
         value: range.position
     }
-}
+}

declarativeimports/plasmacomponents/qml/ToolBar.qml

@@ -80,7 +80,7 @@ Item{
     property string transition: "set"
 
     //This invisible item keeps all the old dismissed tools:
-    //note that the outside application still has to keep references to them (or explicity delete them) or they will just accumulate wasting memory
+    //note that the outside application still has to keep references to them (or explicitly delete them) or they will just accumulate wasting memory
     Item {
         id: oldToolsItem
         visible: false