Improve wording of password change email to indicate that it might not have been user initiated

api/templates/password_change_body.html

@@ -18,7 +18,7 @@
                                         <tr>
                                             <td style="border-bottom: 1px solid #ddd; padding: 0 0 20px;">
                                                 <h2 style="font-weight: normal; margin-top: 10px;">You updated your password</h2>
-                                                <p>You updated your password for {{.Props.TeamDisplayName}} on {{ .Props.TeamURL }} by {{.Props.Method}}.<br>If this change wasn't initiated by you, please contact your system administrator.</p>
+                                                <p>Your password has been updated for {{.Props.TeamDisplayName}} on {{ .Props.TeamURL }} by {{.Props.Method}}.<br>If this change wasn't initiated by you, please contact your system administrator.</p>
                                             </td>
                                         </tr>
                                         <tr>

api/templates/password_change_subject.html

@@ -1 +1 @@
-{{define "password_change_subject"}}You updated your password for {{.Props.TeamDisplayName}} on {{ .ClientCfg.SiteName }}{{end}}
+{{define "password_change_subject"}}Your password has been updated for {{.Props.TeamDisplayName}} on {{ .ClientCfg.SiteName }}{{end}}