Update lunr.js to fix search

Author: luck3y

_includes/search.html

@@ -49,7 +49,9 @@
         query = "";
 
         for(const term of searchTerms) {
-            query += ` +${term}`
+            if (term.length > 0) {
+                query += "+" + term.trim() + " "
+            }
         }
 
         return query.trim();
@@ -138,4 +140,4 @@
 </form>
 <div id="lunrsearchresults">
     <ul id="search-result" name="search-result" class="search-result"></ul>
-</div>
+</div>