Fix typo

Author: lizmat

doc/Language/pragmas.pod6

@@ -102,7 +102,7 @@ not make the compilation error go away.
 By specifying C<use isms>, the compiler will allow the offending Perl 5
 construct, allowing the code to actually be executed.
 
-=item X<B<lib>|lib> This pragma adds subdiretories to the library search
+=item X<B<lib>|lib> This pragma adds subdirectories to the library search
 path so that the interpreter can
 L<find the modules|/language/modules#Finding_Modules>.