message: fix proxy link in CLI page
diff: @@ -35,5 +35,5 @@ To troubleshoot issues with the Ionic CLI, the following may be useful:
  - Make sure the latest version of the Ionic CLI is installed. Update with `npm install -g ionic@latest`.
  - Make sure the latest Node LTS is installed. See [Node & npm](/docs/installation/environment#node-npm) environment setup.
  - The `--verbose` flag prints debugging messages, which may narrow down the issue.
  -- Connection issues may be due to improperly configured proxy settings. See [Using a Proxy](/docs/cli/configuring#using-a-proxy) to configure request proxying.
  +- Connection issues may be due to improperly configured proxy settings. See [Using a Proxy](/docs/cli/using-a-proxy) to configure request proxying.
  - The global Ionic CLI configuration directory is `~/.ionic` on all platforms. It can safely be deleted and the Ionic CLI will repopulate it, but all configuration (including user sessions) will be lost. Configure this directory with [CLI environment variables](/docs/cli/configuration#environment-variables).
  