fix: map marker

Author: Omikorin

source/shared/_osm.html.erb

@@ -1,6 +1,6 @@
 <div>
   <div class="ratio ratio-4x3" style="max-width: 600px; margin: 0 auto;">
-    <iframe src="https://www.openstreetmap.org/export/embed.html?bbox=17.0624515414238,51.112982808881526,17.066335380077366,51.1145571866162&layer=mapnik;marker=51.113962,17.064249&map=19/51.113962/17.064249" style="border: 0; width: 100%; height: 100%;"></iframe>
+    <iframe src="https://www.openstreetmap.org/export/embed.html?bbox=17.0624515414238,51.112982808881526,17.066335380077366,51.1145571866162&layer=mapnik&marker=51.113962,17.064249&map=19/51.113962/17.064249" style="border: 0; width: 100%; height: 100%;"></iframe>
   </div>
   <div class="text-center mt-2">
     <small>