[over.ics.list] Fix "1,0" -> "1.0" in code example.

Author: Stefanus Du Toit

source/overloading.tex

@@ -2143,7 +2143,7 @@
 };
 void g(B);
 g( {'a', 'b'} );            // OK: \tcode{g(B(int,double))} user-defined conversion
-g( {1.0, 1,0} );            // error: narrowing
+g( {1.0, 1.0} );            // error: narrowing
 
 void f(B);
 f( {'a', 'b'} );            // error: ambiguous \tcode{f(A)} or \tcode{f(B)}