(really) rephrase boolean logical OR operator description

...as last commit was really about XOR

Author: stoned

doc/Language/operators.pod6

@@ -1406,12 +1406,13 @@ the coerced value.
 
 =head2 infix C«?|»
 
-    multi sub infix:<?|>($a, $b --> Bool:D)
+    multi sub infix:<?|>(Mu $x = Bool::False)
+    multi sub infix:<?|>(Mu \a, Mu \b)
 
-X<Boolean logical OR operator>.
-
-Coerces both arguments to L<Bool|/type/Bool> and does a logical I<OR> (inclusive OR)
-operation.
+X<Boolean logical OR operator>. Coerces the argument(s) to L<Bool|/type/Bool>
+and performs logical OR (inclusive OR) on it(them): it will return True if at least one of
+the argument is True. On a single argument it behaves as identity, returning
+the coerced value.
 
 =head1 Replication precedence