Add reference to v8 migration guide.

morgante · web-flow · commit 387c760f40b2 · 2020-04-08T12:48:19.000-04:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -8,6 +8,7 @@ Extending the adopted spec, each change should have a link to its corresponding
 
 ## [8.0.0](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/compare/v7.3.0...v8.0.0) (2020-04-07)
 
+v8.0.0 is a backwards-incompatible release. Please see the [upgrading guide](./docs/upgrading_to_v8.0.md).
 
 ### ⚠ BREAKING CHANGES
 

Original file line number	Diff line number	Diff line change
`@@ -8,6 +8,7 @@ Extending the adopted spec, each change should have a link to its corresponding`
`8`	`8`
`9`	`9`	`## [8.0.0](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/compare/v7.3.0...v8.0.0) (2020-04-07)`
`10`	`10`
	`11`	`+v8.0.0 is a backwards-incompatible release. Please see the [upgrading guide](./docs/upgrading_to_v8.0.md).`
`11`	`12`
`12`	`13`	`### ⚠ BREAKING CHANGES`
`13`	`14`