doc: add polyhedral surface concept description and a link to OGC standard

vissarion · vissarion · commit f25e1b69bc3e · 2025-05-05T11:06:16.000+03:00
diff --git a/doc/concept/polyhedral_surface.qbk b/doc/concept/polyhedral_surface.qbk
@@ -15,6 +15,8 @@
 [heading Description]
 [concept PolyhedralSurface..polyhedral surface]
 
+['A PolyhedralSurface is a contiguous collection of polygons, which share common boundary segments](__ogc_sf__).
+
 [heading Concept Definition]
 
 The PolyhedralSurface Concept is defined as following:
