Added docs for Capture.pairs. gfldex++

doc/Type/Capture.pod6

@@ -150,6 +150,24 @@ first followed by the named keys and values.
     my $capture = \(2, 3, apples => (red => 2));
     say $capture.kv;                                  # (0 2 1 3 apples red => 2)
 
+=head2 method pairs
+
+Defined as:
+
+    multi method pairs(Capture:D:) returns Seq:D
+
+Usage:
+
+    $capture.pairs
+
+Returns all arguments, the positional followed by the named, as a
+L<Seq|/type/Seq> of L<Pairs|/type/Pair>. Positional arguments have
+their respective ordinal value, starting at zero, as key while the
+named arguments have their names as key.
+
+    my Capture $c = \(2, 3, apples => (red => 2));
+    say $c.pairs;                                     # (0 => 2 1 => 3 apples => red => 2)
+
 =head2 method Bool
 
 Defined as: