[docs] minor

Fixes https://github.com/harfbuzz/harfbuzz/issues/2321

docs/usermanual-buffers-language-script-and-direction.xml

@@ -193,7 +193,7 @@
       hb_buffer_set_language(buf, hb_language_from_string("en", -1));
     </programlisting>
     <para>
-      However, since these properties are often the repeated for
+      However, since these properties are often repeated for
       multiple text runs, you can also save them in a
       <literal>hb_segment_properties_t</literal> for reuse:
     </para>