doc(filter): remove invalid character

Author: Misha Moroshko

src/ng/filter/filter.js

@@ -69,7 +69,7 @@
        <hr>
        Any: <input ng-model="search.$"> <br>
        Name only <input ng-model="search.name"><br>
-       Phone only <input ng-model="search.phone"å><br>
+       Phone only <input ng-model="search.phone"><br>
        Equality <input type="checkbox" ng-model="strict"><br>
        <table id="searchObjResults">
          <tr><th>Name</th><th>Phone</th></tr>