Tweak a few strings on Acceleration Summary screen

frontend/src/app/components/accelerate-preview/accelerate-preview.component.html

@@ -129,7 +129,7 @@
               </tr>
               <tr class="info">
                 <td class="info">
-                  <i><small>mempool.space fee</small></i>
+                  <i><small>Accelerator Service Fee</small></i>
                 </td>
                 <td class="amt">
                   +{{ estimate.mempoolBaseFee | number }}
@@ -141,7 +141,7 @@
               </tr>
               <tr class="info group-last">
                 <td class="info">
-                  <i><small>Transaction vsize fee</small></i>
+                  <i><small>Transaction Size Surcharge</small></i>
                 </td>
                 <td class="amt">
                   +{{ estimate.vsizeFee | number }}