Fix relationship view when viewing fields with spaces in their name

packages/builder/src/pages/[application]/backend/model/[selectedModel]/relationship/[selectedRecord]/[selectedField]/index.svelte

@@ -3,5 +3,7 @@
   import RelationshipDataTable from "components/backend/DataTable/RelationshipDataTable.svelte"
 </script>
 
-<RelationshipDataTable modelId={$params.selectedModel} recordId={$params.selectedRecord}
-                       fieldName={$params.selectedField}/>
+<RelationshipDataTable
+  modelId={$params.selectedModel}
+  recordId={$params.selectedRecord}
+  fieldName={decodeURI($params.selectedField)} />