Update CHANGELOG.md

CHANGELOG.md

@@ -21,11 +21,11 @@ BUG FIXES:
 
 ## 2.5.0 (April 18, 2019)
 
-KNOWN ISSUES
+KNOWN ISSUES:
 * compute: `google_compute_subnetwork` will fail to reorder `secondary_ip_range` values at apply time
 * compute: `google_compute_subnetwork`s used with a VPC-native GKE cluster will have a diff if that cluster creates secondary ranges automatically.
 
-BACKWARDS INCOMPATIBILITIES
+BACKWARDS INCOMPATIBILITIES:
 * all: This is the first release to use the 0.12 SDK required for Terraform 0.12 support. Some provider behaviour may have changed as a result of changes made by the new SDK version.
 * compute: `google_compute_instance_group` will not reconcile instances recreated within the same `terraform apply` due to underlying `0.12` SDK changes in the provider. ([#616](https://github.com/terraform-providers/terraform-provider-google/issues/616))
 * compute: `google_compute_subnetwork` will have a diff if `secondary_ip_range` values defined in config don't exactly match real state; if so, they will need to be reconciled. [GH-3432]