docs: add space in PG 11 release notes, huge/large

Reported-by: Tatsuo Ishii

Author: bmomjian

doc/src/sgml/release-11.sgml

@@ -2490,7 +2490,7 @@ same commits as above
 -->
 
        <para>
-        Add support for with huge(large) pages on Windows (Takayuki
+        Add support for with huge (large) pages on Windows (Takayuki
         Tsunakawa, Thomas Munro)
        </para>
       </listitem>