Fix some typos in the English locale (fixes #4663) (#4793)

webapp/components/admin_console/connection_security_dropdown_setting.jsx

@@ -18,7 +18,7 @@ const SECTION_NONE = (
         <td>
             <FormattedMessage
                 id='admin.connectionSecurityNoneDescription'
-                defaultMessage='Mattermost will connect over an unsecure connection.'
+                defaultMessage='Mattermost will connect over an insecure connection.'
             />
         </td>
     </tr>
@@ -35,7 +35,7 @@ const SECTION_PLAIN = (
         <td>
             <FormattedMessage
                 id='admin.connectionSecurityPlainDescription'
-                defaultMessage='Mattermost will connect and authenticate over an unsecure connection.'
+                defaultMessage='Mattermost will connect and authenticate over an insecure connection.'
             />
         </td>
     </tr>

webapp/components/admin_console/developer_settings.jsx

@@ -73,7 +73,7 @@ export default class DeveloperSettings extends AdminSettings {
                     helpText={
                         <FormattedMessage
                             id='admin.service.developerDesc'
-                            defaultMessage='When true, Javascript errors are shown in a red bar at the top of the user interface. Not recommended for use in production. '
+                            defaultMessage='When true, JavaScript errors are shown in a red bar at the top of the user interface. Not recommended for use in production. '
                         />
                     }
                     value={this.state.enableDeveloper}

webapp/components/admin_console/webrtc_settings.jsx

@@ -84,7 +84,7 @@ export default class WebrtcSettings extends AdminSettings {
                     label={
                         <FormattedMessage
                             id='admin.webrtc.gatewayWebsocketUrlTitle'
-                            defaultMessage='Gateway Websocket URL:'
+                            defaultMessage='Gateway WebSocket URL:'
                         />
                     }
                     placeholder={Utils.localizeMessage('admin.webrtc.gatewayWebsocketUrlExample', 'Ex "wss://webrtc.mattermost.com:8189"')}
@@ -92,7 +92,7 @@ export default class WebrtcSettings extends AdminSettings {
                         <FormattedMessage
                             id='admin.webrtc.gatewayWebsocketUrlDescription'
                             defaultMessage='Enter wss://<mattermost-webrtc-gateway-url>:<port>. Make sure you use WS or WSS in your URL depending on your server configuration.
-                            This is the websocket used to signal and establish communication between the peers.'
+                            This is the WebSocket used to signal and establish communication between the peers.'
                         />
                     }
                     value={this.state.gatewayWebsocketUrl}