Merge pull request #64339 from liztio/pronouns

Automatic merge from submit-queue (batch tested with PRs 61803, 64305, 64170, 64361, 64339). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Remove some unnecessarily gendered pronouns in comments

**What this PR does / why we need it**:

A bunch of comments are unnecessarily gendered. I've changed them to gender-neutral they/theirs.

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

pkg/scheduler/algorithmprovider/defaults/defaults.go

@@ -56,7 +56,7 @@ func init() {
 	// For example:
 	// https://github.com/kubernetes/kubernetes/blob/36a218e/plugin/pkg/scheduler/factory/factory.go#L422
 
-	// Registers predicates and priorities that are not enabled by default, but user can pick when creating his
+	// Registers predicates and priorities that are not enabled by default, but user can pick when creating their
 	// own set of priorities/predicates.
 
 	// PodFitsPorts has been replaced by PodFitsHostPorts for better user understanding.

pkg/scheduler/core/extender_test.go

@@ -135,7 +135,7 @@ func (f *FakeExtender) ProcessPreemption(
 	nodeToVictimsCopy := map[*v1.Node]*schedulerapi.Victims{}
 	// We don't want to change the original nodeToVictims
 	for k, v := range nodeToVictims {
-		// In real world implementation, extender's user should have his own way to get node object
+		// In real world implementation, extender's user should have their own way to get node object
 		// by name if needed (e.g. query kube-apiserver etc).
 		//
 		// For test purpose, we just use node from parameters directly.