chore: remove repetitive word (#4430)

Signed-off-by: clonefetch <c0217@outlook.com>

frontend/src/lang/modules/en.ts

@@ -2095,7 +2095,7 @@ const message = {
         edit: 'Edit runtime',
         extendHelper:
             'Extensions that do not exist in the list can be selected after manual input, for example: input sockets, and then select the first one in the drop-down list,',
-        rebuildHelper: 'After editing the extension, you need to to rebuild the PHP application to take effect',
+        rebuildHelper: 'After editing the extension, you need to rebuild the PHP application to take effect',
         phpPluginHelper:
             '<a target="_blank" href="https://1panel.cn/docs/user_manual/websites/php/#php_1">View PHP extension list</a> ',
         rebuild: 'Rebuild PHP App',