Update chanel_header.addMembers --> channel_header.addMembers (#5144)

* Update channel_header.jsx

* Update en.json

webapp/components/channel_header.jsx

@@ -421,7 +421,7 @@ export default class ChannelHeader extends React.Component {
                             dialogProps={{channel, currentUser: this.state.currentUser}}
                         >
                             <FormattedMessage
-                                id='chanel_header.addMembers'
+                                id='channel_header.addMembers'
                                 defaultMessage='Add Members'
                             />
                         </ToggleModalButton>

webapp/i18n/en.json

@@ -1037,7 +1037,6 @@
   "backstage_sidebar.integrations.outgoing_webhooks": "Outgoing Webhooks",
   "calling_screen": "Calling",
   "center_panel.recent": "Click here to jump to recent messages. ",
-  "chanel_header.addMembers": "Add Members",
   "change_url.close": "Close",
   "change_url.endWithLetter": "Must end with a letter or number",
   "change_url.invalidUrl": "Invalid URL",
@@ -1055,6 +1054,7 @@
   "channel_flow.handleTooShort": "Channel URL must be 2 or more lowercase alphanumeric characters",
   "channel_flow.invalidName": "Invalid Channel Name",
   "channel_flow.set_url_title": "Set {term} URL",
+  "channel_header.addMembers": "Add Members",
   "channel_header.addToFavorites": "Add to Favorites",
   "channel_header.channel": "Channel",
   "channel_header.channelHeader": "Edit Channel Header",