Refine content: remove redundant Crop/Resize, fix em-dash in layers page

Author: McoreD

xerahs/index.html

@@ -48,7 +48,7 @@ <h3 class="mt-4"><a href="#editor"><i class="fas fa-edit"></i>XerahS Editor Feat
                 <div class="col-sm-3"><a href="/xerahs/layers"><strong>Multi-layer support</strong></a></div>
                 <div class="col-sm-3"><a href="/xerahs/annotation-tools"><strong>Annotation tools</strong></a></div>
                 <div class="col-sm-3"><a href="/xerahs/image-effects"><strong>Image effects</strong></a></div>
-                <div class="col-sm-3">Crop and resize</div>
+
             </div>
         </div>
     </div>

xerahs/layers.html

@@ -24,7 +24,7 @@ <h2 class="mt-4">Powerful Flexibility</h2>
             <div class="row mt-4">
                 <div class="col-md-4">
                     <h3><i class="fas fa-layer-group"></i> Movable Objects</h3>
-                    <p>Every arrow, text box, or shape is an independent object. You can select, move, resize, or delete them at any time—even after you've drawn other things on top.</p>
+                    <p>Every arrow, text box, or shape is an independent object. You can select, move, resize, or delete them at any time even after you've drawn other things on top.</p>
                 </div>
                 <div class="col-md-4">
                     <h3><i class="fas fa-history"></i> Non-Destructive</h3>