Fix about dialog control spacing.

There is a difference between how wxStaticText and wxHyperlinkCtrl
controls are rendered causing alignment issue between the two.  The
cheap and dirty solution was to pad the wxStaticText but this may
yield inconsistent results depending on the platform.

Fixes https://gitlab.com/kicad/code/kicad/issues/4843

common/dialog_about/dialog_about.cpp

@@ -268,7 +268,7 @@ void DIALOG_ABOUT::createNotebookPageByCategory(wxAuiNotebook* aParent, const wx
                                                     wxT( "• " ) + sub_contributor->GetName(),
                                                     sub_contributor->GetUrl(),
                                                     wxDefaultPosition,
-                                                    wxDefaultSize, wxHL_ALIGN_LEFT );
+                                                    wxDefaultSize );
                     }
 
                     m_staticText1->Wrap( -1 );