Fix some typos on the page of "My extensions"

html/typo3conf/ext/ter_fe2/Resources/Private/Templates/Registerkey/Index.html

@@ -187,14 +187,14 @@
                 <h4>Please make sure that the extension key you register follows the following rules</h4>
                 <ul>
                     <li>Allowed characters are: a-z (lowercase), 0-9 and '_' (underscore)</li>
-                    <li>The key must not being with one of the following prefixes: tx,user_,pages,tt_,sys_,ts_language_,csh_</li>
+                    <li>The key must not begin with one of the following prefixes: tx,user_,pages,tt_,sys_,ts_language_,csh_</li>
                     <li>Extension keys must not start with a number and must not start or end with an '_' (underscore)</li>
                     <li>An extension key must have minimum 3, maximum 30 characters (not counting underscores)</li>
                 </ul>
             </div>
         </div>
         <div class="tab-pane" id="transfer" role="tabpanel">
-            <f:form class="form-inline mt-3" action="transfer" controller="Registerkey" name="transferKey" method="POST" onsubmit="if (confirm('Are you sure? You might not be able to get your transfered key back.')) return true; else return false;">
+            <f:form class="form-inline mt-3" action="transfer" controller="Registerkey" name="transferKey" method="POST" onsubmit="if (confirm('Are you sure? You might not be able to get your transferred key back.')) return true; else return false;">
                 <label class="sr-only">
                     <f:translate key="extensionKey" />
                 </label>
@@ -213,7 +213,7 @@
             </f:form>
             <div class="alert alert-warning mt-3">
                 <h4>Please check twice!</h4>
-                <p>Are you sure? You might not be able to get your transfered key back.</p>
+                <p>Are you sure? You might not be able to get your transferred key back.</p>
             </div>
         </div>
         <f:security.ifHasRole role="{settings.terAdminGroupUid}">