[DOCS] Fixes deprecation message for Geo-polygon query (#71141)

* [DOCS] Fixes deprecation message for Geo-polygon query

* Change deprecation to full block admonition.

docs/reference/query-dsl/geo-polygon-query.asciidoc

@@ -3,9 +3,7 @@
 ++++
 <titleabbrev>Geo-polygon</titleabbrev>
 ++++
-
-deprecated[7.12.0,"Use <<query-dsl-geo-shape-query>> instead,
-where polygons are defined in geojson or wkt."]
+deprecated::[7.12,Use <<query-dsl-geo-shape-query>> instead where polygons are defined in GeoJSON or http://docs.opengeospatial.org/is/18-010r7/18-010r7.html[Well-Known Text (WKT)].]
 
 A query returning hits that only fall within a polygon of
 points. Here is an example: