chore: Update CHANGELOG.md

Co-authored-by: Daniel Moran <danxmoran@gmail.com>

CHANGELOG.md

@@ -28,7 +28,7 @@ This release adds an embedded SQLite database for storing metadata required by t
 1. [21522](https://github.com/influxdata/influxdb/pull/21522): Replace telemetry file name with slug for `ttf`, `woff`, and `eot` files.
 1. [21540](https://github.com/influxdata/influxdb/pull/21540): Enable use of absolute path for `--upgrade-log` when running `influxd upgrade` on Windows.
 1. [21545](https://github.com/influxdata/influxdb/pull/21545): Make InfluxQL meta queries respect query timeouts.
-1. [21610](https://github.com/influxdata/influxdb/pull/21610): fix: avoid rewriting fields.idx unnecessarily
+1. [21610](https://github.com/influxdata/influxdb/pull/21610): Avoid rewriting `fields.idx` unnecessarily
 
 ## v2.0.6 [2021-04-29]