Fix spelling (#935)
Fix spelling (#935)

`/s/aginst/against`

<!-- PR title should start with '[fix]', '[improvement]' or '[break]' if this PR would cause a patch, minor or major SemVer bump. Omit the prefix if this PR doesn't warrant a standalone release. -->

## Before this PR
<!-- Describe the problem you encountered with the current state of the world (or link to an issue) and why it's important to fix now. -->

## After this PR
<!-- Describe at a high-level why this approach is better. -->

<!-- Reference any existing GitHub issues, e.g. 'fixes #000' or 'relevant to #000' -->

palantir/http-remoting,palantir/http-remoting