util: Fix copy-paste error in virXPathLongLong description

Signed-off-by: NErik Skultety <eskultet@redhat.com>
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

src/util/virxml.c

@@ -420,7 +420,7 @@ virXPathULongLong(const char *xpath,
 }
 
 /**
- * virXPathULongLong:
+ * virXPathLongLong:
  * @xpath: the XPath string to evaluate
  * @ctxt: an XPath context
  * @value: the returned long long value