Add File::ShareDir::Install to dependencies

Change-Id: I7a46ab0687d828ecfa6617cf542ebab43ce924c1
diff --git a/script/tei2korapxml b/script/tei2korapxml
index e0b07ea..741b27a 100755
--- a/script/tei2korapxml
+++ b/script/tei2korapxml
@@ -461,8 +461,8 @@
 
 =head1 INSTALLATION
 
-C<tei2korapxml> requires L<libxml2-dev> bindings to build. When
-these bindings are available, the preferred way to install the script is
+C<tei2korapxml> requires L<libxml2-dev> bindings and L<File::ShareDir::Install> to be installed.
+When these requirements are met, the preferred way to install the script is
 to use L<cpanm|App::cpanminus>.
 
   $ cpanm https://github.com/KorAP/KorAP-XML-TEI.git