Update scrollspy.md (#29156)

Fixed minor grammatical error:

"... the best method get scroll ..."

=>

"... the best method to get scroll ..."

site/docs/4.3/components/scrollspy.md

@@ -310,7 +310,7 @@ Options can be passed via data attributes or JavaScript. For data attributes, ap
       <td>method</td>
       <td>string</td>
       <td>auto</td>
-      <td>Finds which section the spied element is in. <code>auto</code> will choose the best method get scroll coordinates. <code>offset</code> will use jQuery offset method to get scroll coordinates. <code>position</code> will use jQuery position method to get scroll coordinates.</td>
+      <td>Finds which section the spied element is in. <code>auto</code> will choose the best method to get scroll coordinates. <code>offset</code> will use jQuery offset method to get scroll coordinates. <code>position</code> will use jQuery position method to get scroll coordinates.</td>
     </tr>
     <tr>
       <td>target</td>