Fix pImageSufface -> pImageSurface

Just to spot this to devs.
It is right?

Change-Id: Icc38184149aa3bbdc7eb5a25f3c32735ec20e253
Reviewed-on: https://gerrit.libreoffice.org/61167
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
diff --git a/include/vcl/weld.hxx b/include/vcl/weld.hxx
index 822aec4..687f9d2 100644
--- a/include/vcl/weld.hxx
+++ b/include/vcl/weld.hxx
@@ -259,7 +259,7 @@ public:
    virtual void insert_text(int pos, const OUString& rStr) = 0;
    void append_text(const OUString& rStr) { insert_text(-1, rStr); }
    virtual void insert(int pos, const OUString& rId, const OUString& rStr,
                        const OUString* pIconName, VirtualDevice* pImageSufface)
                        const OUString* pIconName, VirtualDevice* pImageSurface)
        = 0;
    void append(const OUString& rId, const OUString& rStr)
    {