doc: Fix typo in ANALYZE documentation

Commit 61fa6ca accidentally wrote constrast instead of contrast.

Backpatch-through: 10
Discussion: https://postgr.es/m/88903179-5ce2-3d4d-af43-7830372bdcb6@enterprisedb.com

Author: danielgustafsson

doc/src/sgml/ref/analyze.sgml

@@ -273,7 +273,7 @@ ANALYZE [ VERBOSE ] [ <replaceable class="parameter">table_and_columns</replacea
   </para>
 
   <para>
-    By constrast, if the table being analyzed has inheritance children,
+    By contrast, if the table being analyzed has inheritance children,
     <command>ANALYZE</command> gathers two sets of statistics: one on the rows
     of the parent table only, and a second including rows of both the parent
     table and all of its children.  This second set of statistics is needed when