add translation for cert

resource/locales/en-US/translation.json

@@ -403,6 +403,7 @@
       "name": "SAML",
       "entry_point": "Entry Point",
       "issuer": "Issuer",
+      "cert": "Certificate",
       "First Name": "First Name",
       "Last Name": "Last Name",
       "id_detail": "Specification of the name of attribute which can identify the user in SAML Identity Provider",

resource/locales/ja/translation.json

@@ -419,6 +419,7 @@
       "name": "SAML",
       "entry_point": "エントリーポイント",
       "issuer": "発行者",
+      "cert": "証明書",
       "First Name": "姓",
       "Last Name": "名",
       "id_detail": "SAML Identity プロバイダ内で一意に識別可能な値を格納している属性",

src/server/views/admin/widget/passport/saml.html

@@ -118,7 +118,7 @@
           </td>
         </tr>
         <tr>
-          <th>Certificate</th>
+          <th>{{ t("security_setting.SAML.cert") }}</th>
           <td>
             <textarea class="form-control input-sm"
                       type="text"