[BUGFIX] Fix highlighting for words (#1377)

Co-authored-by: Sebastian Meyer <[email protected]>

Resources/Public/JavaScript/PageView/Utility.js

@@ -646,16 +646,16 @@ dlfUtils.scaleToImageSize = function (features, imageObj, width, height, optOffs
 };
 
 /**
- * Search a feature collection for a feature with the given coordinates
+ * Search a feature collection for a feature with the given word in its fulltext
  * @param {Array.<ol.Feature>} featureCollection
- * @param {string} coordinates
+ * @param {string} word for highlighting
  * @returns {Array.<ol.Feature>|undefined}
  */
-dlfUtils.searchFeatureCollectionForCoordinates = function (featureCollection, coordinates) {
+dlfUtils.searchFeatureCollectionForCoordinates = function (featureCollection, word) {
     var features = [];
     featureCollection.forEach(function (ft) {
         if (ft.values_.fulltext !== undefined) {
-            if (ft.values_.fulltext.includes(coordinates)) {
+            if (ft.values_.fulltext.toLowerCase().includes(word.toLowerCase())) {
                 features.push(ft);
             }
         }