Merge pull request kubernetes#62581 from Pharb/changelog-1.10-etcd

Automatic merge from submit-queue. 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>.

1.10 CHANGELOG: Fix supported etcd version comparison with K8s v1.9

**What this PR does / why we need it**:
This updates the 1.10 CHANGELOG to correctly state that the supported etcd server version in v1.9 is 3.1.10.
This also corrects the reference to the pull request which updated the etcd version for v1.10. 

**Release note**:

```release-note
NONE
```

CHANGELOG-1.10.md

@@ -1346,7 +1346,7 @@ parameters:
 * Wait for kubedns to be ready when collecting the cluster IP. ([#57337](https://github.com/kubernetes/kubernetes/pull/57337), [@wwwtyro](https://github.com/wwwtyro))
 
 ## External Dependencies
-* The supported etcd server version is 3.1.12, as compared to 3.0.17 in v1.9 ([#60988](https://github.com/kubernetes/kubernetes/pull/60988))
+* The supported etcd server version is 3.1.12, as compared to 3.1.10 in v1.9 ([#60998](https://github.com/kubernetes/kubernetes/pull/60998))
 * The validated docker versions are the same as for v1.9: 1.11.2 to 1.13.1 and 17.03.x ([ref](https://github.com/kubernetes/kubernetes/blob/master/test/e2e_node/system/docker_validator_test.go))
 * The Go version is go1.9.3, as compared to go1.9.2 in v1.9. ([#59012](https://github.com/kubernetes/kubernetes/pull/59012))
 * The minimum supported go is the same as for v1.9: go1.9.1. ([#55301](https://github.com/kubernetes/kubernetes/pull/55301))