Fix & characters in advanced.html

h2/src/docsrc/html/advanced.html

@@ -1422,25 +1422,25 @@ CREATE SPATIAL INDEX GEO_TABLE_SPATIAL_INDEX ON GEO_TABLE(THE_GEOM);
 </pre>
 <p>
 To query the table using geometry envelope intersection,
-use the operation <code>&&</code>, as in PostGIS:
+use the operation <code>&amp;&amp;</code>, as in PostGIS:
 </p>
 <pre>
 SELECT * FROM GEO_TABLE
-WHERE THE_GEOM && 'POLYGON ((490 490, 536 490, 536 515, 490 515, 490 490))';
+WHERE THE_GEOM &amp;&amp; 'POLYGON ((490 490, 536 490, 536 515, 490 515, 490 490))';
 </pre>
 <p>
 You can verify that the spatial index is used using the "explain plan" feature:
 </p>
 <pre>
 EXPLAIN SELECT * FROM GEO_TABLE
-WHERE THE_GEOM && 'POLYGON ((490 490, 536 490, 536 515, 490 515, 490 490))';
+WHERE THE_GEOM &amp;&amp; 'POLYGON ((490 490, 536 490, 536 515, 490 515, 490 490))';
 -- Result
 SELECT
     GEO_TABLE.GID,
     GEO_TABLE.THE_GEOM
 FROM PUBLIC.GEO_TABLE
     /* PUBLIC.GEO_TABLE_SPATIAL_INDEX:
-    THE_GEOM && 'POLYGON ((490 490, 536 490, 536 515, 490 515, 490 490))' */
+    THE_GEOM &amp;&amp; 'POLYGON ((490 490, 536 490, 536 515, 490 515, 490 490))' */
 WHERE INTERSECTS(THE_GEOM,
     'POLYGON ((490 490, 536 490, 536 515, 490 515, 490 490))')
 </pre>