Fix indentation.

Author: cfa

doc/Language/functions.pod6

@@ -1054,11 +1054,11 @@ If the entire script body resides within C<MAIN>, you can use the C<unit>
 declarator as follows:
 
 =begin code :skip-test<unit>
-    unit sub MAIN( Int :$length = 24,
-                    :file($data) where { .IO.f // die "file not found in $*CWD" } = 'file.dat',
-                    Bool :v(:$verbose) #`( -verbose, --verbose, -v or --v ) );
+unit sub MAIN( Int :$length = 24,
+                :file($data) where { .IO.f // die "file not found in $*CWD" } = 'file.dat',
+                Bool :v(:$verbose) #`( -verbose, --verbose, -v or --v ) );
 
-    # rest of script is part of MAIN
+# rest of script is part of MAIN
 =end code
 
 Note that this is only appropriate if you do not need a C<proto> or C<multi> definition.