Fix typo

Author: Daniel Gustafsson <[email protected]>
Discussion: https://postgr.es/m/[email protected]

Author: mhagander

doc/src/sgml/ref/create_table.sgml

@@ -957,7 +957,7 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
 
      <para>
       When placed on a partitioned table, <literal>PRIMARY KEY</literal>
-      constraints share the restrictions previously decribed
+      constraints share the restrictions previously described
       for <literal>UNIQUE</literal> constraints.
      </para>