changelog: fix spelling mistake (hashicorp#16009)

Replace consult-template with consul-template.

CHANGELOG.md

@@ -54,7 +54,7 @@ IMPROVEMENTS:
 
 * activity: return nil response months in activity log API when no month data exists [[GH-15420](https://github.com/hashicorp/vault/pull/15420)]
 * agent/auto-auth: Add `min_backoff` to the method stanza for configuring initial backoff duration. [[GH-15204](https://github.com/hashicorp/vault/pull/15204)]
-* agent: Update consult-template to v0.29.0 [[GH-15293](https://github.com/hashicorp/vault/pull/15293)]
+* agent: Update consul-template to v0.29.0 [[GH-15293](https://github.com/hashicorp/vault/pull/15293)]
 * agent: Upgrade hashicorp/consul-template version for sprig template functions and improved writeTo function [[GH-15092](https://github.com/hashicorp/vault/pull/15092)]
 * api/monitor: Add log_format option to allow for logs to be emitted in JSON format [[GH-15536](https://github.com/hashicorp/vault/pull/15536)]
 * api: Add ability to pass certificate as PEM bytes to api.Client. [[GH-14753](https://github.com/hashicorp/vault/pull/14753)]