Really rid the tabs this time

Author: jonathanstowe

doc/Language/concurrency.pod

@@ -279,9 +279,9 @@ is an integer starting at 0 that is incremented for each event. The
 following code outputs 0 .. 5 :
 
 
-	my $supply = Supply.interval(2);
-	$supply.tap(-> $v { say $v });
-	sleep 10;
+    my $supply = Supply.interval(2);
+    $supply.tap(-> $v { say $v });
+    sleep 10;
 
 This could also be written using the C<react> keyword:
 
@@ -421,9 +421,8 @@ when the channel is closed.
 Channels can be used in place of the L<Supply> in the C<whenever> of a
 C<react> block described earlier:
 
-	my $channel = Channel.new;
-
-	my $p = start {
+    my $channel = Channel.new;
+    my $p = start {
         react {
             whenever $channel {
                 say $_;