Misc. typos (#8694)

Found via `codespell -q 3 --skip="./app/javascript/mastodon/locales,./config/locales"`

app/javascript/mastodon/features/compose/util/url_regex.js

@@ -170,7 +170,7 @@ export const urlRegex = (function() {
       ')'                                   +
     '\\)',
     'i');
-  // Valid end-of-path chracters (so /foo. does not gobble the period).
+  // Valid end-of-path characters (so /foo. does not gobble the period).
   // 1. Allow =&# for empty URL parameters and other URL-join artifacts
   regexen.validUrlPathEndingChars = regexSupplant(/[^#{spaces_group}\(\)\?!\*';:=\,\.\$%\[\]#{pd}~&\|@]|(?:#{validUrlBalancedParens})/i);
   // Allow @ in a url, but only in the middle. Catch things like http://example.com/@user/

app/javascript/mastodon/features/ui/util/react_router_helpers.js

@@ -26,7 +26,7 @@ WrappedSwitch.propTypes = {
   children: PropTypes.node,
 };
 
-// Small Wraper to extract the params from the route and pass
+// Small Wrapper to extract the params from the route and pass
 // them to the rendered component, together with the content to
 // be rendered inside (the children)
 export class WrappedRoute extends React.Component {