[gtkmm/wip/dboles/builder-nicer-4: 3/4] Builder: Use refBuilder-> not refXml-> in examples

[Daniel Boles <dboles src gnome org>]

commit 696abbfcfa654a2177783dd38a70736a2183fb4b
Author: Daniel Boles <dboles src gnome org>
Date:   Sun Dec 16 23:46:26 2018 +0000

    Builder: Use refBuilder-> not refXml-> in examples
    
    It's much less clear what refXml is when we could just say refBuilder,
    as we already do elsewhere.

 gtk/src/builder.hg | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/src/builder.hg b/gtk/src/builder.hg
index 264648d1..73028e1f 100644
--- a/gtk/src/builder.hg
+++ b/gtk/src/builder.hg
@@ -445,7 +445,7 @@ public:
    * For instance:
    * @code
    * Gtk::Grid* pGrid = nullptr;
-   * refXml->get_widget("mygrid", pGrid);
+   * refBuilder->get_widget("mygrid", pGrid);
    * @endcode
    * This method prints a warning message to the console if the widget
    * doesn't exist or has the wrong type, so you don't need to check that
@@ -485,7 +485,7 @@ public:
    *
    * For instance:
    * @code
-   * Gtk::Grid* pGrid = refXml->get_widget("mygrid");
+   * Gtk::Grid* pGrid = refBuilder->get_widget("mygrid");
    * @endcode
    *
    * See get_widget().