Add space before @lm_attrs

Related to issue #240 #241 
Caused by #237
Space was added before the @lm_attrs in the list item, but was missed in the anchor tag.

Author: dustingraham

src/Lavary/Menu/resources/views/bootstrap-navbar-items.blade.php

@@ -1,6 +1,6 @@
 @foreach($items as $item)
   <li @lm_attrs($item) @if($item->hasChildren()) class="nav-item dropdown" @endif @lm_endattrs>
-    @if($item->link) <a@lm_attrs($item->link) @if($item->hasChildren()) class="nav-link dropdown-toggle" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" @else class="nav-link" @endif @lm_endattrs href="{!! $item->url() !!}">
+    @if($item->link) <a @lm_attrs($item->link) @if($item->hasChildren()) class="nav-link dropdown-toggle" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" @else class="nav-link" @endif @lm_endattrs href="{!! $item->url() !!}">
       {!! $item->title !!}
       @if($item->hasChildren()) <b class="caret"></b> @endif
     </a>