Fix a couple of strings in localization (#4228)

i18n/en.json

@@ -625,7 +625,7 @@
   },
   {
     "id": "api.command_shortcuts.msgs",
-    "translation": "#### Messages\n\n#### Messages\n\nALT+[click on a message]: Set a message as your oldest unread message in the current channel\nESC: Mark all messages in the current channel as read\nCTRL+UP (in empty input field): Reprint the previous message or slash command you entered\nCTRL+DOWN (in empty input field): Reprint the next message or slash command you entered\nUP (in empty input field): Edit your last message in the current channel\n@[character]+TAB: Autocomplete @username beginning with [character]\n:[character]+TAB: Autocomplete emoji beginning with [character]\n\n"
+    "translation": "#### Messages\n\nALT+[click on a message]: Set a message as your oldest unread message in the current channel\nESC: Mark all messages in the current channel as read\nCTRL+UP (in empty input field): Reprint the previous message or slash command you entered\nCTRL+DOWN (in empty input field): Reprint the next message or slash command you entered\nUP (in empty input field): Edit your last message in the current channel\n@[character]+TAB: Autocomplete @username beginning with [character]\n:[character]+TAB: Autocomplete emoji beginning with [character]\n\n"
   },
   {
     "id": "api.command_shortcuts.msgs_mac",

webapp/i18n/en.json

@@ -1989,7 +1989,7 @@
   "user.settings.security.google": "Google",
   "user.settings.security.lastUpdated": "Last updated {date} at {time}",
   "user.settings.security.ldap": "AD/LDAP",
-  "user.settings.security.loginGitlab": "Login done through Gitlab",
+  "user.settings.security.loginGitlab": "Login done through GitLab",
   "user.settings.security.loginLdap": "Login done through AD/LDAP",
   "user.settings.security.logoutActiveSessions": "View and Logout of Active Sessions",
   "user.settings.security.method": "Sign-in Method",