Fix typo

Author: mhagander

doc/src/sgml/charset.sgml

@@ -857,7 +857,7 @@ CREATE COLLATION german (provider = libc, locale = 'de_DE');
    <note>
     <para>
      By design, ICU will accept almost any string as a locale name and match
-     it to the closet locale it can provide, using the fallback procedure
+     it to the closest locale it can provide, using the fallback procedure
      described in its documentation.  Thus, there will be no direct feedback
      if a collation specification is composed using features that the given
      ICU installation does not actually support.  It is therefore recommended