Update copy for `redact` permission

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/components/views/settings/tabs/room/RolesRoomSettingsTab.js

@@ -239,7 +239,7 @@ export default class RolesRoomSettingsTab extends React.Component {
                 defaultValue: 50,
             },
             "redact": {
-                desc: _t('Remove messages'),
+                desc: _t('Remove messages sent by others'),
                 defaultValue: 50,
             },
             "notifications.room": {

src/i18n/strings/en_EN.json

@@ -967,7 +967,7 @@
     "Change settings": "Change settings",
     "Kick users": "Kick users",
     "Ban users": "Ban users",
-    "Remove messages": "Remove messages",
+    "Remove messages sent by others": "Remove messages sent by others",
     "Notify everyone": "Notify everyone",
     "No users have specific privileges in this room": "No users have specific privileges in this room",
     "Privileged Users": "Privileged Users",