correct minor typos

doc/Language/modules.pod

@@ -21,7 +21,7 @@ files in a namespace.
 
 =head2 Basic Structure
 
-Module distributions in Perl 6 have the same stucture as any distribution in
+Module distributions in Perl 6 have the same structure as any distribution in
 the Perl family of languages:  there is a main project directory containing
 a C<README> and C<LICENSE> file, a C<lib> directory for modules, a C<t>
 directory for tests, and possibly a C<bin> directory for executable programs

doc/Language/nativecall.pod

@@ -78,7 +78,7 @@ how to do the marshalling.
 
     sub message_box(Str is encoded('utf8')) is native('libgui') { * }
 
-To specify how to marshall string return types, just apply this trait to the
+To specify how to marshal string return types, just apply this trait to the
 routine itself.
 
     sub input_box() returns Str is encoded('utf8') is native('libgui') { * }

doc/Type/Supply.pod

@@ -426,7 +426,7 @@ automatically re-routed to the :bleed Supply.
 =back
 
 The :bleed named parameter optionally specifies a Supply that will receive
-any values that were either explicitely bled (with the B<bleed> control
+any values that were either explicitly bled (with the B<bleed> control
 message), or automatically bled (if there's a B<vent-at> active).
 
 The :vent-at named parameter indicates the number of values that may be