Spec fix for #126172

Author: lizmat

S07-lists.pod

@@ -81,9 +81,9 @@ For example, consider the C<push> method:
     @a.push: 1, 2, 3;       # pushes 3 values to @a
     @a.push: [1, 2, 3];     # pushes 3 values to @a
     @a.push: @b;            # pushes @b.elems values to @a
+    @a.push: @b,;           # same, trailing comma doesn't make > 1 argument
     @a.push: $(1, 2, 3);    # pushes 1 value (a List) to @a
     @a.push: $[1, 2, 3];    # pushes 1 value (an Array) to @a
-    @a.push: @b,;           # pushes 1 value (whatever is in @b)
 
 Additionally, the list constructor (the C<< infix:<,> >> operator) and the
 array composer (the C<[...]> circumfix) follow the rule: