Removes 3 other instances of a potential encoding problem

Signed-off-by: hoijui <hoijui.quaero@gmail.com>

libs/kimath/src/trigo.cpp

@@ -396,7 +396,7 @@ const VECTOR2D GetArcCenter( const VECTOR2D& aStart, const VECTOR2D& aMid, const
     {
         if( aStart == aEnd )
         {
-            // This is a special case for a 360° arc.  In this case, the center is halfway between
+            // This is a special case for a 360 degrees arc.  In this case, the center is halfway between
             // the midpoint and either end point
             center.x = ( aStart.x + aMid.x ) / 2.0;
             center.y = ( aStart.y + aMid.y ) / 2.0 ;

pcbnew/router/pns_dragger.h

@@ -141,7 +141,7 @@ private:
     ///< Contains the list of items that are currently modified by the dragger
     ITEM_SET               m_draggedItems;
 
-    ///< If true, moves the connection lines without maintaining 45° corners
+    ///< If true, moves the connection lines without maintaining 45 degrees corners
     bool                   m_freeAngleMode;
 };
 

pcbnew/tools/point_editor.cpp

@@ -502,7 +502,7 @@ int POINT_EDITOR::OnSelectionChange( const TOOL_EVENT& aEvent )
                 break;
             }
 
-            // The alternative constraint limits to 45°
+            // The alternative constraint limits to 45 degrees
             bool enableAltConstraint = !!evt->Modifier( MD_CTRL );
 
             if( enableAltConstraint )