Update releases/release_phases.md

Co-authored-by: Priyanka Saggu <[email protected]>

Author: sreeram-venkitesh

releases/release_phases.md

@@ -2,7 +2,7 @@
 
 ## PRR Freeze
 
-The PRR freeze is a prelimary soft deadline, happening one week before the Enhancements Freeze.
+The PRR freeze is a preliminary soft deadline, happening one week before the Enhancements Freeze.
 
 As described by the PRR team [here](https://groups.google.com/a/kubernetes.io/g/dev/c/CQ33yPqp-H4/m/hHO-NaQiAQAJ):