fix changelog

Author: dashpole

.chloggen/prometheus-deprecate-adjuster.yaml

@@ -16,7 +16,7 @@ issues: [37186]
 # These lines will be padded with 2 spaces and then inserted directly into the document.
 # Use pipe (|) for multiline entries.
 subtext: Start time adjustment is still enabled by default. To disable it, enable the |
-receiver.prometheusreceiver.RemoveStartTimeAdjuster feature gate.
+  receiver.prometheusreceiver.RemoveStartTimeAdjuster feature gate.
 
 # If your change doesn't affect end users or the exported elements of any package,
 # you should instead start your pull request title with [chore] or use the "Skip Changelog" label.