use Families instead of the generic 'Container'

Change-Id: I009002621a5481b91e14a215237278d56d742579

sw/inc/unostyle.hxx

@@ -66,7 +66,7 @@ class SwXStyleFamilies :  public cppu::WeakImplHelper
 {
     SwDocShell*         m_pDocShell;
 
-    std::map<SfxStyleFamily, css::uno::Reference<css::container::XNameContainer>> m_vContainers;
+    std::map<SfxStyleFamily, css::uno::Reference<css::container::XNameContainer>> m_vFamilies;
 protected:
     virtual ~SwXStyleFamilies();
 public:

sw/source/core/unocore/unostyle.cxx

@@ -303,10 +303,10 @@ uno::Any SwXStyleFamilies::getByIndex(sal_Int32 nIndex)
         throw uno::RuntimeException();
     auto eFamily = our_vStyleFamilyEntries[nIndex].m_eFamily;
     assert(eFamily != SFX_STYLE_FAMILY_ALL);
-    auto& rxContainer = m_vContainers[eFamily];
-    if(!rxContainer.is())
-        rxContainer = new XStyleFamily(m_pDocShell, eFamily);
-    return uno::makeAny(rxContainer);
+    auto& rxFamily = m_vFamilies[eFamily];
+    if(!rxFamily.is())
+        rxFamily = new XStyleFamily(m_pDocShell, eFamily);
+    return uno::makeAny(rxFamily);
 }
 
 uno::Type SwXStyleFamilies::getElementType()